The mechanic is that all dice d6-d12 count as 1. That's the advantage to having them carried as consumables vs units. To go into more detail just for context, you can carry/find units of consumables which count as a normal item. (they might be hauled on a mount or something) 1 Unit of consumable bumps the die a tier up to d12. A player can also bump their consumable down a tier to create a unit to give another player or sell or store or whatever. In the meantime, I'm doing just like you suggested - adding the present consumables as gear lines. Once again sheet rocks!