Meet the Ohbot2: a robot head you can program from your PC. It comes with an Arduino-compatible servo controller. There is also a visual interface that helps children learn programming. Your kids will be able to control how the head moves, speaks, and sees.
The above video shows what Ohbot2 is all about. The robot can move its mouth, turn its head, move its eyes, and more. More information is available on Kickstarter.