Pillow cases or any cloth to cover them up work fine, but Balls aren't the quickest snakes and you should be fine just distracting them with one hand and reaching around from the back and grabbing their head. Once you have their head, grab their body and gently unwrap them from their clutch. It helps to have someone else there in case your snake has a fit and thrashes around, but usually they just come right off with minimal effort.