printing up any physical object like a belt, shoe, toys, iphone covers/cases... whatever you think of and can design using 3D printing software it can be printed/created.

It's the next huge thing that will change the world and economies. I don't feel it's a positive for our struggling world economies though. Why buy that physical good you desire thru a store (online or offline) when you and everyone else will be able print it up at home?