The Gyroscopic Robot Kit, from Thames &Kosmos, is pretty cool.
The Gyrobot is a toy that is like a human on two wheels. The wheels are on the bottom, one behind the other. It has a head on top and two arms. It is a robot that works because it has a gyroscope inside. You can build it and take it apart and you can build seven different bots.The Gyrobot has some cool features. You can move its arms all around it. It can push up to about seven grams. One of the Gyrobots can walk on thick string. Some requirements for working the Gyrobot are batteries because it’s motorized and a flat surface so it can go.
For more information, visit bit.ly/1FgXMlL.