This brings me back to my childhood. Hopefully all of you know what a koosh ball is, but if you don’t, it is a rubber ball made of rubber filiments attached to a rubber core.
I used to play with these all the time. Not only do I like that this example brings me back to the earlier days, I like how it incorporates the mouse. When you move the mouse over the hair ball it looks like you are moving the hair. Also the number of times you click the mouse determines how high the hair ball will bounce.