car auto shops. They have the little convex mirrors that you put on your rearview... works perfect. I've got one on top of my monitor. Costs about $4 too. I don't know about 5" though. Actually, there's a junk type store around here in SF that had boxes of ACTUAL rearview mirrors for cars, with the plastic surround and everything. i was gonna go this weekend and get one to stick on the side of my monitor... hah!