Looking for a Christmas gift your child will actually get excited about?
Letterbox Lab delivers hands-on science gifts for kids that inspire curiosity, confidence and joy — without any of the mess or stress.
And for Christmas, we’re including a FREE science puzzle book when you order by 7 December.
No mess, no stress — everything is organised and ready to go
Screen-free excitement with real hands-on learning
Designed by real scientists
Multiple experiments in every box — the excitement lasts
Flexible subscriptions – 100% guaranteed fun or cancel any time!
This is a STEM gift for kids that feels magical and meaningful.
Not all science kits are created equal. Many are one-and-done and forgettable.
Ours are:
Beautifully designed and engaging
Packed with experiments, not filler
Clear and child-led (“I did it myself!”)
Confidence-building, not confusing
This is why parents call us the best science kits for children who are curious, imaginative and hands-on.
Every box includes:
Exciting science experiments for kids at home
Colourful materials and all the equipment they need
Simple, friendly step-by-step guides
Activities that fizz, bubble, float, glow and transform
No extra materials needed. No stress. Just wonder.
Order any 3, 6 or 12-month subscription and we’ll include a
FREE Whizz Pop Bang science puzzle book in your first delivery.
No code required!
👉 This gift is in high demand during December. To ensure delivery, order early.
⭐️⭐️⭐️⭐️⭐️ “Extremely good value for money‚ we found it easy to put time aside to do an experiment every couple of days”
⭐️⭐️⭐️⭐️⭐️ “I cannot recommend this subscription box enough. This isn’t only because of the actual product and the fun we have encountered, but also because of the people behind the product. The customer service we have experienced has been second to none,”
⭐️⭐️⭐️⭐️⭐️ “The attention to detail is amazing and it has been put together in a very visually engaging way.”
What age is this suitable for?
Great for ages 6–12, with clear levels of support.
I don’t have a science background, will I have trouble helping my child?
Not at all! Each box comes with a full colour booklet with illustrated instructions and a link to a set of videos that show each activity being performed. We design experiments in such a way that your child will discover concepts for themselves by performing them, and provide explanations for the scientific phenomena that they discover. On top of all this, parents have access to a cheat sheet‚ to fully brief them on the phenomena in advance!
Can my child use these kits on their own?
These kits are intended only for use under adult supervision. The degree to which a supervising adult needs to be involved will vary from child to child and is left to your discretion.
Do the boxes really fit through the letterbox?
We have based the dimensions of the Investigate box on the average for UK letterboxes. The dimensions are 200mm x 35mm x 400mm (yes, it’s pretty long!). The Explore box is slightly larger than a large letter, so again will fit through most letterboxes. If your letterbox is particularly small the box may not fit, but you can specify a safe place where the box can be left for you.
Order by 7 December to get your FREE science puzzle book.
No code needed. Receive a free science puzzle book when purchasing a 3, 6 or 12-month subscription to Letterbox Lab. Offer valid until midnight on 07.12.25.
