Hope this is in the right place...my apologies otherwise. So, what are some around-the-house items that can be made into volume knobs? This is for a beater bass, and I am on a low budget right now (who knew DBs were so expensive?), so what are some things I can pop on there? The originals are loose and I am getting sick of them. Any ideas? I've seen once made of wood that look like actual control knobs on some of your basses, but I don't think I'd be able to pull that off. Thanks!