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Flat powerful tesla coil and compact for gas-discharge tubes and bulbs 110V/220V

$3.99

K'nex White Rods Replacements Add-on Parts Pieces 7 1/4" long Lot of 4

$10.95

[ Flyron PIR-002 ] PIR Motion Sensor/Detector

$19.99

Wooden Crane Pulley Power KiwiCo STEM Engineering Building Kit Ages 9+ New

$39.99

Elenco Snap Circuits Classic SC300 Electronics Kit Sc-300 60 Parts 300 STEM

$22.58

Sillbird 12-In-1 Solar Robot Building Kit STEM Gift for Boys Aged 8-13, DIY Scie

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6 in 1 STEM Robotics Kit for Ages 8-12 - Fun Coding & Engineering Activities

$15

Glow in the Dark Lab kit with book

$10.99

Plasma Electricity Ball 5" Black Smithsonian 51802 B/O Normal/Audio Mode

$59.99

Radio Shack 20W Soldering Starter Kit Radioshack Soldering Iron Solder 6400215

$5.95

[ SparkFun BOB-11722 ] Rotary Encoder Breakout - Illuminated (RG/RGB)

$69.99

Bluetooth Music Tesla Coil Arc Plasma Loudspeaker Wireless Transmission Exper...