There's a few shown here:
http://www.icebike.org/Equipment/cyclingmirrors.htm
http://www.bikecyclingreviews.com/Mi...your_Bike.html

I use a helmet-mounted mirror instead, but the principle's the same. I position it right at the edge of my glasses's lens frame, so it obstructs as little to the front-left as possible (you'd be front-right, as you said). Being far to the side also helps give a broader view to the rear since my head doesn't obstruct the view as much.

And, like AndrewP said, you can see everything behind you with a quick sweep of your head. You can't do that with a handlebar mirror.