I purchased a nice, used relocation bracket on EBAY, but only used it only once and I only ever used the drivers side (all that's required in Ca). BUT, I can no longer remove my stock mirror from the stock mount.... it's stuck!
SO... I went to the local motorcycle shop (Cycle Parts West), and bought a very cheap, small round mirror for around $10. I use a hose clamp and washer on top to set the height, and the threaded shaft drops right into the top door hinge hole. Flat washer on bottom, and the nut holds it. Yeah, it's kinda cheese-ball....but it is legal and works. Plus it fits in the "trunk" hole when not in use.