The SolarSpeeder 2 Kit is a very quick Solaroller that can cover 3 meters (10 feet) in under 40 seconds in direct sunlight.
This new version of the Photopopper is still a solar-powered, light-seeking, obstacle-avoiding robot, but now with update electronics & gold trim that make it twice as fast!
Our demobot shown built with GM3 motors (since replaced with GM2) on an Sintra base (extra).
These aren't kits, as much as they are an inexpensive bag of components so you can build yourself a Symet.
Herbie the Mousebot is a very quick, easy-to-build, light-chasing robot kit with functional whisker and tail sensors!
The BeetleBot is a simple kit to make a quick and basic obstacle-avoiding robot without using any solder.
The BoE-Bot Robot Kit (USB) is a complete mobile robotics kit.
It's small, fast, and very well designed line-following/maze solving robot. And a great deal!