[Poll] I'm doing a Gleam Contest - what should the prizes be? (Patreon)

Hey folks! I'm going to put together a Gleam Contest this weekend. If you aren't familiar with how Gleam works, it's a social sharing platform that awards those who get friends to sign up to a mailing list/social media, etc. I know a lot of you already have brought on some friends, but this will give you an opportunity to do it in a little more "official capacity."

Having said that, what sort of prizes should I offer up for those who really knock it out of the park?

I've put a few ideas below, but feel free to add in some more.

One note: sadly, Patreon won't let me give away memberships (pretty annoying). So I can't offer that. Having said that, I can give away levels in the game.