Best Stem Machines

Klutz: Lego Chain Reactions: Design and Build Amazing Moving 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

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

LEGO Gear Bots (Klutz): Create 8 Machines

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

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

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

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

LEGO Gadgets (Klutz) Multi-color

ROWOOD 3D Puzzle Pinball Machine Mechanical Wooden Model Kits for Adults and Teens to Build STEM Toy Model Building Craft Kit Creative Birthday