If your riding on the street - you need to have the capability to check your 6. So putting a shine piece of metal on the end of your lever is not what I would recommend. There are tons of 3" bar end mirrors that look great, allow you to check your 6 and provide a little extra security when riding on the street. I just ordered a set for my bike (I currently just have 1 left side mirror that I have to move my shoulder to see anything behind me...) which I plan to install on both sides of the bike.
If your hell bent on just meeting the legals of your state - you could fashion a dental mirror on to your bike. My order will come in on Friday and I can not wait to install them.
No mirror - install a backup camera on your bike. You can buy the full kit at Sam's club for about 150.00 - not sure if it's legal but you can do away with a mirror and still have a view to the back of the bike.
Sure - here's one of my 69's, the other 69 is in restoration back to stock. I'm hoping to have the engine in the frame this weekend. The 71 is a project for this winter and will be some-sort of wild child for the street. I'm still thinking about the design. So here's my current daily ride.