Spark Fun
Geared Motor (2 Pack)
$5.50
These are a pair of hobby gearmotors from DAGU. These gearmotors are the same ones recommended for use in the Shadow Chassis and offer a cheap and easy-to-use setup to get your wheels turning.
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Kelvin
DC Motor
$3.25
Great motor to use with solar panels or turbines!
Vernier
Water Pump
$11.00
The KidWind Low Voltage Water Pump is a great way to demonstrate power output from the wind and solar kits. It makes comparing different turbine designs easy; simply measure how high different turbines can pump water using this mini pump.
Christmas Lights Etc
Colored Incandescent Bulbs
$19.99
Contrasting LED bulbs with incandescent bulbs is a great way to show just how inefficient they are!
Amazon
Colored LED Bulbs
$15.29
We love to use holiday LED bulbs with solar or wind projects because you can cut the strings up easily to provide lots of loads for your students to experiment with!
Amazon
Mini LED Lights
$7.96
These mini LED string are great to hack in your solar structures. Cut and attach to your solar panels!