Thames & Kosmos Roller Coaster Engineering STEM Kit | Design, Build, Experiment W/ Working Roller Coaster Models | Explore Physics, Forces, Motion,

Mould King Roller Coaster Building Set, Large Amusement Park Coaster Model Kit With Motors, Creative Gift For Adults, Engineering STEM Toy For Teens (

Wood Trick Wooden Marble Run Spiral Electric Motorized - Wooden 3D Puzzles For Adults To Build - 13X13 - Roller Coaster Mechanical Wooden Model Kits

HOGOKIDS Space Roller Coaster Building Toy - 926PCS Coaster Building Set Features Lift Platform, Satellites, Rocket Buildable Space Rollercoaster

K'nex Education - STEM Explorations: Roller Coaster Set 546 Pieces, Creative Building Set Ages 8+