I’ve had two products on Betabrand, which is a fashion company in San Francisco that crowdsources its designs. Ideas must pass through a voting phase followed by a crowdfunding phase before going into production.
This disco trapper hat made it through voting, but was only a few sales short in crowdfunding to make it to a production run sadly. At least I have a sample to enjoy! While it is not for sale, there is an instructable if you would like to make one yourself.