Potion Tokens have less than 2 days left on Kickstarter. If you want in on the project, you’d better hurry.
From the campaign:
A Potion Token is a unique RPG table-top gaming accessory that represents a great way for a table-top RPG player to keep track of his or her potion inventory during game-play. The Potion Token is given to a player by the DM (Dungeon Master) or GM (Game Master) when the player’s character finds potions in an adventure. When a player uses (spends) a Potion Token, they can physically hand the Potion Token to the DM.