Actually (Engineer mode engaged)
Why doesn't someone fit one of the rate of climb beepy things you get in gliders to a weight shift. I reckon that would be way better than fixed wing for a blind person. Add in a speaking height for the last 10ft and it would be sorted. Might not make your money back but would be a good thing for the old website to advertise.
I was also thinking you could make an artifical horizon by using what for a better word "tit" to rest your palm on and the nipple would give the attitude slaved to an earth strapped giro. Then have selectors for the heading, track, alt on the fingers and also a speak heading/altitude when pressed button and then up down button on thumb to select what you want. Nice little engineering final year project that one.