
What better way to make the run-up to Christmas even more exciting than with some wonderful Advent Calendars? While nobody cancelled the time-honoured chocolate variety, we thought we’d bring you our favourite STEM advent calendars together in one list for budding young scientists in your family. Hope you’ll treat them to one of these to enjoy a science-filled Christmas countdown this year and make magical memories every day of December with 24 activities of festive fun!
National Geographic Gemstone Advent Calendar (£34.99)

Each day of December as Christmas approaches, kids can open a gorgeous new gemstone to add to their collection! The box comes with a collector’s pouch to keep all your gems safe. The beautiful, polished gemstones for kids in this advent calendar include agate, green aventurine, hematite, sodalite, turquenite, tiger’s eye, blue calcite, and more. The final piece in this collection is a stunning rose quartz specimen kids unearth from a mini dig brick. When you’re done, either use the gems as a study material or turn them into jewellery.
GraviTrax Advent Calendar (£31.37)

Countdown to Christmas with 24 days of exciting GraviTrax surprises! The GraviTrax Advent Calendar comes with 36 track pieces and accessories to expand on your existing GraviTrax Starter Set. Each compartment reveals a fun GraviTrax gift, from height tiles to tracks, from special curves to a spinner – everything you need to build a fun little marble run to race the 3 holiday-coloured marbles. Build new routes and create crazy trick shots, expand the marble run with new ideas, expansion sets to keep the ball rolling.
LEGO: City (£21.99), Friends (£21.99), Harry Potter (£29.99), Star Wars (£29.99), Guardians of the Galaxy (£20.99)

LEGO traditionally offers a whole range of Advent Calendars full of LEGO surprises. Kids can count down to the big day with the City, Friends, Harry Potter, Star Wars, and Guardians of the Galaxy Advent Calendars, featuring a fun surprise behind every door to inspire imaginative play. Build up festive stories as each gift is revealed! An easy-to-follow construction guide is printed inside each calendar door, ensuring a fun and easy building experience. Daily surprise gifts can be played with or used as decorations.
The Crazy Scientist Advent Calendar (£29.95)

This science Advent Calendar by The Purple Cow will provide your kids with 24 exciting scientific experiments for each day of December before Christmas. A different experiment is hidden in each box keeping our young science enthusiasts, boys and girls, engaged for hours. It comes with experiments from various scientific fields – chemistry, biology, mechanics, optics, and magnetics. All necessary components are included plus a detailed illustrated manual with easy step-by-step instructions. Experiments can be carried out without prior knowledge.
Jurassic World Dominion Advent Calendar (£34.90)

Get ready for 24 days of thrilling surprise and action with Jurassic World Dominion! This movie-inspired holiday Advent Calendar counts down 24 days of celebration with more than 30 total toy pieces including 19 mini dinosaurs, 1 mini human figure and 10 gate and platform playset pieces all in a holiday-themed package. Kids will delight in uncovering the daily surprise of a dino, human figure or set pieces to create a play environment of 30 total pieces. Makes a great holiday gift for kids who love dinosaurs.
OKIDO Advent Calendar (£3.99)

OKIDO launched their new Messy Monster Advent Calendar with stickers. Every day a new sticker helps count down the days to Christmas while revealing an exciting festive Messy adventure.
Electronic Sounds Advent Calendar (£27.49)

Build your own electronic sounds synthesizer in the countdown to Christmas. Ditch the chocolate and switch to an advent calendar which gives you something tangible on Christmas Eve! If you want to spend this December getting inside the electronics and understanding how they work, then Build Your Own Electronic Sounds Advent Calendar by Eight is the perfect festive countdown for you. Behind each window is an electronic component which allows you to build a retro synthesizer. Perfect present for aspiring engineers in your life!
12 Projects of Codemas Maker Advent Calendar (£40)

The 12 Projects of Codemas Maker Advent Calendar is the ultimate festive treat for makers of all ages (from 7yo) and experience levels, guiding you step-by-step through 12 exciting days of fun projects. The first day of the calendar includes a Raspberry Pi Pico H, Micro-USB cable, and breadboard to get you set up including some introductory code examples, then the following boxes each contain a new project to learn and program with the Pico and popular components (sensing things, blinky things, and more).
All products were chosen independently by our editorial team. This guide contains NO affiliate links, so we won’t be receiving any commission for purchases made.