Best Stem Machines

Klutz: Lego Chain Reactions: Design and Build Amazing Moving Machines

LEGO Gear Bots (Klutz): Create 8 Machines

OMWay STEM 12-in-1 Solar Robot Toys, Science Kits for Kids Age 8,Building Experiment Engineering Robotics Kits,Christmas Birthday Gifts Toy for 9 10 11 12 13 14 Year Old Boys Girls

LEGO Gadgets (Klutz) Multi-color

Science Kidz Electronics Kit - Electric Circuits For Kids - 188 Experiments Set - Science Kits For Kids 7,8,9,10 - Educational STEM Toys For Kids

CONSTRUCT & CREATE Hydraulic Cyborg Hand DIY STEM Build Your Own Project Kit Set

Machine Works Build Your Own Jet Engine Toy - Replica Model Building Kit - Features Sounds and Illumination, 40+ Pieces, 10+ Years

NATIONAL GEOGRAPHIC Magnetic Marble Run - 150-Piece STEM Building Set for Kids & Adults with Magnetic Track & Trick Pieces & Marbles for Building A Marble Maze On Any Magnetic Surface

ACELIFE STEM Solar Robot Toy 12-in-1 Educational Science Kit DIY Building Toy Construction Engineering Set for Kids Age 8-12 Boys & Girls Birthday, Solar Powered Toy-Green

National Geographic Professional Rock Tumbler Kit- Rock Polisher for Kids and Adults, Complete Rock Tumbler Kit with Durable Tumbler, Rocks, Grit, and Our New GemFoam Polisher, A Great STEM Hobby