My thoughts:

Bandages
More 4x4s, less roll gauze
knuckle and fingertip bandaids
less tape, lose the cloth tape, keep athletic tape
add Sensi-Wrap Self-Adherent Bandages or similar (like sticky ace wraps)
? Blisto-ban

Tools
Add Uncle Bill's Sliver Grippers

Other
Drop matches, add Bic (? Mini-Bic)
? toothbrush (have toothpaste)

Meds
Celecoxip (RX, but not considered controlled in US - less hassle if questioned)
Bactroban or Polysporin, not both
? temp filling kit

How long is this kit to provide for? A single dose of the antibiotics may cause more harm than good unless a pharmacy is less than a day away.