We have a 24 inch tv. I used the webbing from a tie down strap and cut two 12 inch lengths. Folded them in half and screwed them into the back of the tv at the four mounting holes, creating two loops. Used some large washers to keep them from twisting. I use hooks like these, but bought mine from Wal-Mart for about 3bucks for a two pack.
http://www.amazon.com/Spectrum-Over-...over+door+hook
The hooks are slender, but strong. Plenty strong for my tv. When not in use, I keep the hooks in the loops. I slide my whole tv into a pillow case and store it under the sofa. Very easy to pull out, grab the hooks, and hang it on either wall. Easy to pull out from the wall to hook up cables, and a bit flexible in case it gets bumped. Also creates a downward tilt due to the loops, which gives you a better viewing angle from the sofa.
I'm typing on my kindle and don't have a pic on here, but I'll post one later.