Having the party in a teepee made this particular favour seem quite obvious. A mini teepee for their Tiny Teds' to camp in. I googled teepee instructions, and used their template to make my own, with a few added extras. Each packet has a set of instructions too. In retrospect I should have hunted down some heavier weight brown card... *shrug*. Next time.
I hope the kiddies decorate them, I'd love to see how each looks made up... Maybe I'll hassle their mamas' for pics.
Dunno about you, but this sort of thing would've been right up my alley when I was a kiddo. DIY, mini, packaged. All things that were lovely to me back then (and erm, still are actually!).