My walls are covered in light green sound panels which are beautiful and practical in a music room. The only drawback to these lovely walls is that hanging things is tricky and dust collects on every inch of them. Here are my two solutions to this problem.
In an ideal world I would use the hose attachment on a vacuum but there isn't one available to me, so the next best thing is a lint roller. You would not believe the amount of dust I picked up off my walls. Eew! It's amazing, I don't feel congested nearly as often. :)
This isn't the exact brand of pins that I have but this is the type that I use to hang anything on the sound panels. They work so much better than push pins because of their length. I found mine at Michael's last summer in their sewing section.