Airswimmers is fun !
The official site is here
The most amazing radio-controlled product ever made! Fly the Giant Sized Shark around your house or work place and see people’s reactions! Simple to fly the RC controller enables you to make the Shark move left, right, and forward with ease. Incredibly manoeuvrable the fish is able to turn in very small spaces, so can easily swim around your house or office. A crash is no problem. Unlike other flying RC products the Shark just bounces off walls and other objects without damage.
The price is not expensive too, it is only at 38USD
I think this toy is worth to buy for fun !
You can order from here