Every kit needs some IMODIUM for those RUNNY momentsFor First Aid we were going to piece together a kit of disinfectants, ace bandages, a tourniquet a splint kit, some gauze, some basics like excedrine, asprin, something for upset stomach, etc. just very basic. This was the purifier I was thinking of getting but again I have never used a purifier so I don't know what to look for in a good one. http://www.rei.com/product/671111/msr-sweetwater-water-purifier-system