Want to build a quick project without soldering or wiring? littleBits is the new way to build. Featuring powerful modules, called Bits, that magnetically snap together in a tight electrically-sound connection, littleBits enables you to build complete circuits in minutes rather than hours.
No soldering, no breadboarding, and no wiring is required. Just dump your Bits on a table and start building. Luckily, Bits can only snap together in the correct polarity and orientation. So add a 9V battery, a sensor, and an LED display and you’ve created a functioning light meter in two minutes.
SparkFun has the littleBits Space Kit on sale for $149.95.