I love the cloth badges, they appeal to my collecting nature, and sometimes I wonder if I do the rides just to get the badge or if I get the badge to remember the ride? I was so excited when I got my RRtY badge, all that effort summed up in a small piece of cloth. My friends think it's daft.
It is a good question though, as I still don't know what to do with them all; currently they sit on my desk at work.