I've been using Velcro to attach my iPad to various things, from lecterns to walls. Here's a link to a display I set up in my studio:

Chromatica

Works great, you just have to be careful about peeling the adhesive off the wall.

Anybody else using Velcro? How?

i put a small piece of velcro on the upper back of my ipad. (Just below the bevel part). Then I put a larger piece inside my leather case. That keeps the ipad from falling out of the open end of the case when I change the screen orientation. It is then easy to pop the Ipad out when necessary. I put the "smooth" part of the velcro on the ipad so that it does not scratch one's hand when out of the case.

I use the iPad for song lyrics/music (so I don't have to lug 3-ring notebooks about). I put 2 small strips of "soft" velcro on the back and the "rough" velcro on my portable/collapsable music stand. It's easy enough to read, even with my old eyes, and is as secure as the stand. 200+ songs, and we haven't scratched the potential ...

Ray