ideas for keeping my hands occupied so i dont pick! help!

really trying to stop picking, i mess with my face (acne) and basically the rest of my body (keratosis pilaris which is little bumps) i have managed to stop for five months before but i inevitably begin to backslide! a few scratches here or there or bothering one acne bump can send me back to picking for hours and messing up weeks worth of work. i know a lot of good strategies but need more help! any ideas on keeping hands occupied and leaving my skin alone?