K.G.
I don't do favors or goody bags. I HATE when my kids get goody bags. They are a pain, the stuff is usually junk and it gets thrown away.
Useful things are nice though. At one party we went to, each kid got a spongebob or princess water bottle. They were from the dollar store. Those were nice becuase they were actully useful and not garbage.
My friend does paper bags, with a fruitsnack, granola bar and a fun straw or something in it.