3)Bee stings!! There are a lot of bushes with flowers near our field, so there are a LOT of bees (believe it or not, it's the first place I've seen honey bees in a few years) - a pair of tweezers etc, a clean single edged blade to get the stinger out
As a seasoned beekeeper who gets stung regularly, I would recommend keeping some Benedryl handy too. I really helps.
+1 on Nursemike's comments about distributing medication to anyone else.