Easy Electric Circuits
$32.00
Human-Powered Light Bulb
$4.50
Ladybug Robot Soldering Kit
$33.00
Mega Cyborg Hand
$45.00
Motors & Generators
$25.00
Newton's Cradle
$15.00
Plasma Ball
$18.00
Potato Clock
$16.00
WindBots: 6-in-1 Machine Kit
$33.00