Amazon.com: Thames & Kosmos | Robotics Smart Machines | Robotics for Kids 8 and up | STEM Kit builds 8 Robots | Full Color Manual to help with assembly | Requires tablet
Amazon.com: Thames & Kosmos Water Power STEM Experiment Kit | Build Your Own Rocket-Propelled Cars, Boats, and More! | Explore Physics of Air & Water, Pneumatics | 6 Models | Full-Color Manual
Amazon.com: Thames & Kosmos Mega Cyborg Hand STEM Experiment Kit | Build Your Own GIANT Hydraulic Amazing Gripping Capabilities Adjustable for Different Sizes Learn Pneumatic Systems : Toys & Games
WINDBOTS: 6 IN 1 WIND POWERED MACHINE KIT - THE TOY STORE
Kids First Level 1 - Automobile Engineer - Best for 3 year olds