To get back to the OP.... stuff to accumulate?

lots of 4x4 (bulk come in 100 packs), gauze rolls (bulk is usually about 12), a few ace wraps. Maybe a SAM splint. Some Immodium/Pepto, some Benadryl or other allergy pill. Whatever personal meds you take. Some sort of NSAID (aspirin, motrin) or Tylenol. Don't forget to rotate this stock out. Maybe a roll of Toilet Paper (while waiting for the Immodium to work). A box of various size bandaids, a tube or 2 of Bacitracin or Neosporin (apply lightly!). Some butterfly bandages or steri-strips, if you can get someone to show you how to use them properly. Gloves, if you feel the need.

That should do you until a first responder shows up.