This is simply awesome! See the picture which doesn't do it justice. When you are seeing this in real life, you will absolutely believe that there is a little ball sitting on top of a mirrored surface. But it isn't! You will try to grab it and you won't see it all. 

It's like a hologram optical illusion chamber. You simply must pick one of these up just to play with. You'll find it will become your favorite new desk toy, that everyone else will be asking about!