Re: Dojo First Aid Kit
1" athletic tape
Instant ice packs (not necessary if you have a freezer, just make sure you keep ice on hand)
Soap is more important than antibacterial ointment
A couple of sanitary napkins (for direct pressure in case of heavy bleeding)
That pretty much covers situations where you need first aid. More important still, though, is having people who are trained in first aid and know when and how to use the stuff.