My husband found this toy at Costco and gave it to our son for his 14th birthday. My son likes Legos and building kits so this was a natural fit.
This would be my STEM toy recommendation for the holiday season. I love how it teaches simple machines in a really fun way.
My son describes this STEM toy:
This is the Vex toy that he received:
You can also buy the kits seperately:
To view the Vex kits at Amazon, click on image. As an Amazon Associate, I earn from qualified purchases.