I’m not sure if this really counts as a project, as I didn’t do much except fork money over :). I designed a T-shirt using Cafepress and one of my Chibi Koala drawings. I used the shaman as he is one of my favorites of them all (Pink glow caused by original backdrop):
I had to do a special very high resolution export of the shaman from Inkscape and added a thinner black boarder. As it turns out the high contrast that I use in my paper miniatures also looks good on a t-shirt. About the only thing I wish I could change would be to double the size of the rear image but its at cafe press maximum already. The shirt was pretty reasonably priced even with shipping it came out at $37 and there is something really nice about having your own drawings on a t-shirt.
I’ll probably do a few more for myself next year with different designs. If anyone else is interested just leave a comment as I can always open Cafe press shop thing with various images on items.