G G: Though the short answer is however you like here's some suggestions: Ammo Tracking (especially in systems like dungeon world where you rarely need more than a handful of cards for the purpose), graphical representation of loot when it needs to be divvied out, shop inventory if their is a limited selection, or any other time you wish to make a collection of objects something more than a written or oratory list. Arthur B: Clones, I always keep at least 5 of me around. Sure the clones have turned on and destroyed the "original" several times, but hey does it really matter when we are all alike?