Black Friday may be “officially” over, but there are still tons of deals worth grabbing before they’re gone. Amazon, in particular, has a wealth of STEM (Science, Technology, Engineering, and Math) toys on sale that are perfect for kids, teens, and even adults who love to tinker and experiment.

Sure, you could just pop the latest video game into your cart and call it a day, but where’s the fun in that? With a STEM toy, you can encourage problem-solving skills, critical thinking, and a genuine love of learning. (Plus, your giftee will most likely want to build or create whatever it is immediately, so you can make a memory of it.)

From solar robots to one-of-a-kind growing kits, here are the best STEM toy deals you’ll find on Amazon right now.

Best deal overall

Why we like it

The National Geographic Ultimate Crystal Garden is a prime example of a STEM toy that offers hours of educational entertainment. (As soon as I saw this, I added it to my cart for my nephew.) With this NatGeo kit, your little ones can grow a crystal garden in six hours. It comes with everything you need to get started, including five watercolor pens so they can choose the colors of their crystals.

And the best part? You’ll be giving the gift of magic for the small price of $13.49.

Early Cyber Monday STEM toy deals