Physics Simple Machines
$16.00
Engineering
Levers and Linkages
$40.00
Gears & Worm Drives
$40.00
Zipes Expansion Set
$35.00
DIY Wooden Sailboat
$55.00
Circus Acrobat Automaton Kit
$55.00
DIY Wooden Counter
$25.00
Robotic Snake
$22.00