This is a helpful resource for some common summer first-aid needs. Other favorites of mine are:
Plantain–put the leaves in a blender with enough water to make a paste and apply to itchy skin (whether from insect bites, plants, etc.)
Oregon Grape root tincture (Mahonia spp)–apply topically to minor cuts to help kill germs (this one might sting a little so be careful with young children)
Nettle tea or tincture–for those summer allergies
Homeopathich Cantharis–takes the sting out of a sunburn with just a few pellets under the tongue
HAPPY SUMMER!!