I don't really like tracking equipment (really the one thing about BESM d20 I truly liked was the fact all equipment that the character carried regularly was just assumed to be part of the character -- if you wanted shiny toys, you paid for it by fewer neat class tricks. Also why I like the magic items in the Companion). So, I instituted the 'Common Sense Rule of Carrying'. Basically, it assumes that characters have easy access to all cheap, semi-portable adventuring supplies (ropes, material for making fire, etc.). If I think there's a chance that no one brought something, I have everyone make a Wisdom check against a DC that usually varied from 10 (not obvious, but you might think to grab one just in case) to 20-25 (why would you bring that)? For example, a long enough piece of rope to use it to descend stories in a ruin that lost its stairs, when the characters hadn't really planned on ruin-exploring when they left town.
Things that are completely obvious (food and water, camping supplies if one is heading off the beaten path, etc.) I just assumed everyone picked up.