This UFO hovercraft drone is the best $20 I have spent on a toy yet! This toy is a great way to introduce children to engineering and physics by learning about drones, motion sensor technology, and infrared lighting.
(Click here to see it in action!)
It has a motion sensor letting you control it from the motion of your hands! Our whole family loves playing with this. The best part is that it is constructed out of a flexible material so it won't damage your walls or furniture. It also has a proximity sensor that detects nearby objects and is programmed to move away from them.