I discovered over the weekend that the iPhone's dimensions are within millimeters of the Moto Droid's. So I went to Target and got 2 silicone iPhone cases for $15. They fit great. They're not an exact fit, obviously, but the stretch in the silicone makes them fit tightly enough to be good. And if you put them on upside down, the slot at the top lets you easily get at the on/off switch.