What kind of products am I allowed to sell on my IndieMade site?

You can sell anything you want on your IndieMade site, so long as it's legal to sell it. IndieMade isn't a marketplace and it isn't curated. You don't have to be independent, or an artist, or even create what you sell. It's your site and you can do whatever you want with it.  (Just don't break any laws, OK? We're serious about that part.)