I have some 'bump buddies' I keep in the freezer. They're little animal shapes filled with goo that make great kids cold packs. They fix lots of stuff in this house.
A thermometer - well three - a digital tympanic, my neonatal digital and a regular one.

I have to say mine is really bare. I don't tend to put stuff on injuries as a general rule and my kids don't 'do' medicines/vitamins voluntarily so I don't bother.