Check this out for lots....and I mean a lot of different ideas. I keep a pretty in depth bag, but im sure most doctors do for first responder situations. Something is better than nothing. Just order a online kit that fits your needs. I personally take over stock from my clinic or hospital that's about to expire. Plus check local free clinics when stuff is about to expire, sometimes they just throw it out or send it back to manufacturer.
Making a "Survival Kit"