I have been trying to get my woodworking hubby to make me one for a few years now. grrr! In the meantime, I buy the clearance vinyl-fuzzy backed tablecloths at the local Wal-Mart and thumbtack them to the wall, vinyl side against the wall and they work great. I have 2 of them up now.
Hmmm, beings this is such a cheap alternative maybe that's why I am still waiting for him to make one? LoL! Ah well, works just fine for me and they are portable too, just unpin and roll with everything still on it.