Might be this? Probably less wobbly than the insect antenna type, will miss the arm and might show more than your knee?
Buy BIKE-EYE The Bicycle Mirror for £15.00 at Spa Cycles
www.spacycles.co.uk
A great improvement over the original, very clever concept
road.cc
Thats an interesting one mounted on the headtube, not seen that type before.
TBH I'm not into mirrors. I did fit one Zefal is it ? many many years ago but took it off because I prefer to look around me rather than rely on a mirror which i think gives a limited view. You are kind of confined to what the mirror shows and there could lie complacency.
Then there is the reflecting lights issue at night.
Admittedly taking eves off the road ahead offers a drawback, but its really just glancing rather than spending any sort of time off the road ahead.
I remember reading of a motorbike mirror a guy developed, sat on top of the fork at the top of the steerer tube, it was curved and gave a view of everything behind left and right. I remember it because the story was he wanted to market it to the type of bike company who markets these things, but they wanted to charge i think 80 quid or something and he felt that was just ripping bikers off and it should be 20 quid or thereabouts as it was an important safety feature more than anything else.
I've no idea if he got the idea off the ground. I dont follow motorbike stuff these days
I wonder if the same type of thing that fits onto the back of the stem at the steerer clamp bolts would be of use on regular bicycles.