Robot help for my Work in Progress

Okay, so I have this very cool robot technology in my next story, but I have to decide what it is going to look like in its "non-morphed" stages. Yes, it is a morphing robot.

This robot will move on land, climb buildings, go airborne, and is submersible. Its "non-morphed" stage is on land. The requirement is for it to be no bigger than a softball and has to morph into something 1 cm.

So, what would a robot look like if you could hold it in the palm of your hand? I'm hoping to come up with an idea that at first glance you would not notice it was mechanical.

Any suggestions would be greatly appreciated.