The Investigate Box Series

Time to up your science game!

Not an ordinary science kit! This is unique series of science kits for eager experimenters, curious tinkers and kid boffins alike. Take your little scientists on an incredible adventure of wonder, curiosity and awe.

Each box contains:

  • everything you need for all the experiments,
  • enough materials for 1-3 children,
  • 6-8 exciting science experiments,
  • collectable lab equipment and gadgets,
  • a “level up” badge for your little scientist to wear,
  • a fully-illustrated 24-page instruction booklet,
  • link to online resources including video instructions and a scientific recipe.

Suitable for children aged 8 and up.

Ready to play with science?

You can subscribe to pay for a new box every month, subscribe and pay for three at a time, pay for as many as you want with no subscription or buy them one at a time whenever you like.


£24.00 per box inc. UK postage
£22.50 per box inc. UK postage
No recurring payments

*Both subscription options allow you to cancel or postpone payments at any point and choose to receive a new exciting science kit every month or every two months.

Not convinced yet? We’d tell you more about how super duper awesome our Investigate Boxes are, but we’d rather let our customers do the talking:

“Letterbox Lab is truly exceptional – my son absolutely loves it. We homeschool, and this is the best educational subscription box I’ve found. The experiments are so much fun, and there’s a definite progression through each month’s theme as you follow the experiments. This is a box that takes science education seriously and doesn’t condescend to, or underestimate children’s ability to understand scientific principles. My son has learned so much from Letterbox Lab – I couldn’t be happier!”

– Jo, mum of an Investigator

a girl making a liquid rainbow with letterbox lab science equipment
a boy doing a science trick with a test tube from letterbox lab
Letterbox Lab supplies series of science kits that gradually build skill and knowledge over time.

About the Investigate Box

What’s so good about it?

The Investigate Box is more than a science kit. It’s a science club that comes to you, sliding through your letterbox with everything you need to spend hours discovering the Universe with your little scientist. It’s the only science subscription box specifically designed to be a series. Each box follows the one before, so you know there’s always more to discover and the lab equipment you collect will be put to great use in your experiments.

How do subscriptions work?

Choose a pay-per-box subscription to set up monthly or bi-monthly payments. We send you a box each time you renew.  Choose a pay-per-3-boxes subscription to pay upfront for three boxes. These subscriptions automatically renew once all three boxes have shipped.

All orders are shipped within 3 working days  by Royal Mail 48, so you’ll get each box within five working days of payment.

We know that family life is busy and ever-changing, so our subscriptions are completely flexible. You can choose monthly or bi-monthly deliveries (or switch between them) and you can pause or cancel your subscription at any time. If you want to gift a set number of kits you can choose a pre-pay subscription.

What’s in the boxes?

Each box contains everything you need to perform 6-8 experiments, with most consumables being doubled up so you can do them twice (2 or 3 children can easily share a box), plus collectable lab equipment, a 24-page fully illustrated instruction booklet, pencil and badge.

We don’t like to be formulaic, so every box is different. You can see a full list of the boxes with the experiments inside here.

Playing with science can be as fun for you as it is for your little scientist if you get Letterbox Lab to do the work for you.

Have a look at what our customers have to say!

“I’m really really impressed. Literally everything is in the box, the gloves are child size, each experiment is in its own cute bag and the instructions are super clear and easy to follow with scope for kids to try their own ideas out and note down findings.” 

– Vicky

“Was really impressed with the way everything is set out, each experiment in separate labelled bags, making it very easy to find what you need. Knowing you don’t have a dash to the supermarket to buy extra ingredients is fantastic too.” 

– Sarah
Marvellous Mixtures Investigate Box
Vicky shared this fabulous photo of her little scientist concentrating on Incredible Inks from Investigate Box 1
Vicky shared this fabulous photo of her little scientist concentrating on Incredible Inks from Investigate Box 1

“Letterbox Lab is a fantastic educational product. I Home educate my 10 yr old son and we receive a new investigate box every month. Everything you need is supplied in the box, so no need to rush out and buy extra ingredients. Both myself and my son look forward to our science sessions every week, in fact it’s the highlight of our week. Always arrives on time and it does what it says on the box ‘fits straight through your letterbox’ so no need to worry if we aren’t in on delivery day. This really is the best educational product I have bought my son. Thank you Letterbox Lab.” 

– Tracey

“This is an excellent science kit and my 7 year old son absolutely loves it! It makes science so much fun as it is learning by doing, not just looking at 2D worksheets. As a parent it is easy to be confident when everything is in the box ready to go and there are easy child friendly explanations for all the experiments. Would highly recommend!”  

– Morgan
£24.00 per box inc. UK postage
£22.50 per box inc. UK postage
No recurring payments

*Both subscription options allow you to cancel or postpone payments at any point and choose to receive a new exciting science kit every month or every two months.

Try the Explore Box for 6+

Gas Powered Explore Box science kit for children

The little box of big ideas.

Is there a curious child in your family? A wee scientist with big questions? The Explore Box brings everything you need to inspire them with wondrous science experiments and hands-on projects. We’ve done all the hard work prepping, filming and gathering materials, so you and your little scientist can open the box and have fun making discoveries together.

Each box contains:

  • everything you need (but still fits through most letterboxes),
  • enough materials for 1-2 children,
  • 3-4 exciting science experiments,
  • a “level up” sticker for your little scientist to wear,
  • a fully-illustrated 12-page instruction booklet,
  • link to online resources including video instructions.

Suitable for children aged 6 and up.

Ready to play with science? Choose one.

£10 per box inc. UK postage
£9.50 per box inc. UK postage
No recurring payments

*Both subscription options allow you to cancel or postpone payments at any point and choose to receive a new exciting science kit every month.

About the Explore Box

What’s in the boxes?

Each box in the series of twelve is different – we don’t like to be formulaic!

What you can definitely expect from every box is enough materials to complete 3-4 science experiments, activities and projects. Each box generally fills an afternoon with science fun, but we package everything up neatly so you can dip in and out throughout the month if you prefer.

The boxes also include a 12-page fully illustrated instruction booklet (featuring lab assistants Meg and Pico) that makes every step perfectly clear. If that’s not enough, we’ve filmed every experiment for you to watch! Your little scientist will also get a pencil to record their findings and a special achievement sticker to wear.

You can see a full list of the boxes with the experiments inside here.

Meg and Pico are the Letterbox Lab Assistants, and arrive with every science subscription box to guide children through their experiments
MEg and Pico are the Letterbox Lab Assistants, and arrive with every science subscription box to guide children through their experiments

How do subscriptions work?

Choose a pay-per-box subscription to pay monthly and get a new Explore Box each month.  Choose a 3-monthly subscription to pay every three months and get a new Explore Box each month.

All orders are shipped within 3 working days  by Royal Mail 48, so you’ll get each box within five working days of payment.

We know that family life is busy and ever-changing, so our subscriptions are completely flexible. You can pause or cancel your subscription at any time. If you want to gift a set number of kits you can choose a pre-pay subscription.

Give those big ideas an outlet with this little box of big science fun.

Have a look at what our customers have to say!

 

“Letterbox Lab makes learning fun and exciting. I was as excited as my grandson carrying out all the experiments.” 

– Caroline

“Excellent resources to aid learning. Enjoyed by both adults and children. Has made science fun. Love it.”  

– Fiona

Great value for money. Something we can all do together would definitely recommend.”  

– Talia

“Lots to keep the kids occupied and they were really excited to see the outcomes of each experiment. Love the fact that it comes with everything you need. ”  

– Christina
Claire shared this lovely photo of her little scientist teaching his little brother all about volcanoes using Explore Box 4: Gas Powered!
Claire shared this photo of her little scientist teaching his little brother all about volcanoes using Explore Box 4: Gas Powered!
Tracey had this to say about her son's experience with Explore Box 10: "My little future astronaut loved the Your Place In Space box ! Lots of really enjoyable and exciting experiments."
Tracey had this to say about her son's experience with Explore Box 10: "My little future astronaut loved the Your Place In Space box ! Lots of really enjoyable and exciting experiments."

“My science knowledge is pretty basic and my son is science mad so this was a great discovery for us both. We have lots of fun doing the experiments and he’s really excited every time he receives a new box. Thanks so much – genuinely one of the best things we’ve ever found!” 

– Jane

“We love letterbox lab, we have tried a few of the others that are out there but Letterbox Lab is definitely the best! We subscribe to this for my 5 year old but find that her older siblings join in too. Love it!” 

– Leanne