I'm sure many of you work in cubicles where you're forced to have your back to your ``door'', and have some sort of convex mirror to see behind you.

Where did you find it? The only one I can find is CHIMP over at ThinkGeek, but I think that that's too small for my purposes. I think I'd prefer one that's about 5" in diameter, and preferably have an arm like a rear-view mirror.

Anyone have any ideas?