I just read on a German blog about a resource management technique using a d6. The example given was arrows for an archer. Every archer gets a number. 2 is the default. 3 is well prepared. 0 is out of arrows. On fumble (natural 1), this number goes down. After every fight roll a d6. On a 1 the number goes down.
As a player I have the hardest time remembering to keep track of arrows, bolts, rations, and other similar things. This alternative sounds like it might be worth a try.