OK designers here is a fun and cool site where you get to design shirts and sell them cheaply and the best part you get paid $3 a shirt! Not such a bad payback. Now your shirt designs may not available forever, but, how fun to earn good money and be up on their site.
In the interest of full disclosure I do not make any money by linking to this site and I do not currently have a design on their site but may in the future and that will be marketed separately.
I just came across it and thought it was rather unique and wanted to share.