Tackle boxes work great as first-aid kits! I just bought one to use as mine, and the divided compartments and see through lids are very handy to keep everything organized and easy to find. I purchased the Plano Double Sided Tackle Box for mine from Wal-Mart for around $12 or so. The box is similar to the one which I linked to, but the compartment sizes and arrangement are a bit different (and better, in my opinion).