$12.95

Ramsey Dual LED Blinky Kit BL-1 Electronics Educational Kit 1993 Age 12 & Up

$85

Elehobby Movit 938 Navius Robot Electronic Educational Kit MIB VTG Japan

$3.99

Marble Mania Replacement Part Green #20

$100

Moss Robot Construction System Exofabulatronixx 5200 Modular Complete need App

$23.28

STEM Electronic DIY Kit Humidifier Soldering Project Kit, Temperature OLED Displ

$4.99

SNAP CIRCUITS Elenco Space War IC Sound Box U3

$2.99

Marble Mania Replacement Parts Black #25

$13.84

Solar Boat DIY Solar Power Generation Model Science Toy Sturdy Wood Wind Power

$9.89

DIY 15W Mini Coil Music Audio Speaker Electronic Field Project Kit A

$41.99

SparkFun Redbot Basic Kit ROB-13166 Build Your Own Motor Car

$44.95

[ Flyron FN-AS115-N ] Weatherproof Triggerable Audio Player for Outdoor Use

$9.89

DIY 15W Mini Coil Music Audio Speaker Electronic Field Project Kit E