Gift Guide: 20+ STEM toy gift ideas for aspiring young builders

Welcome to TechCrunch’s 2021 Holiday Gift Guide! Need help with gift ideas? We’ve got lots of them. We’re just starting to roll out this year’s gift guides, so check back from now until the end of December for more! 
For this year’s STEM toy gift guide we’ve split out our recommendations by age for easier navigation. The 20+ gift ideas (below) run the gamut from train sets controlled by colorful blocks, to robots that can draw, all the way up to a cute DI