One day I came across this vinyl in the fabric store. Oh wait now that's different, easy, washable and lightweight. Even better, it was in the remnants pile for $5/yd.
My thoughts lit up, I could see this on the wall. My other creative ideas would wait till another time. So off I went with my $15 dollar find to Lowes to come up with an easy way to attach and remove this with as little touch up as possible.
My solution - furniture tacks. That will work.