@ascentale @daihard @crankyclown #BikeNite A8: I have a bar end mirror on my underseat steering recumbent trike, too, but I'm not that happy with it. I don't have a better solution there.
On upright bikes I clearly prefer a helmet mounted mirror. I have one from #MonkeyMirrors https://www.monkeymirrors.com/ and I'm happy with it for maybe a decade now. The only mod I did was to add additional fastening with a reusable zip-tie.
I had a glasses-mounted mirror before, but that made my glasses slant. ๐