If you haven’t heard of TeeFury, you’re missing out. The way it works is similar to Shirt.Woot. They sell one limited edition t-shirt per day (for only $9), and after that 24 hour period is over, it’s gone for good. They also recently announced a new partnership with Design by Humans which will only mean bigger and better things in the future. You can read more about the partnership right here.
Here are a few of past design examples:
Image from Design by Humans