This is regarding to the post here : http://www.makeuseof.com/tag/how-to-score-money-with-t-shirt-designs/
I heard that there is a some kind of instrument which helps us to design T-Shirts with slogons in bulk and sell them.
I searched over internet and wasn’t able to find anything to use. Here in Hyderabad, only one or two guys make such businesses. May be you can write a new article about such thing and help hobbyists ?