Back in the early 2000s I had the urge (after watching Space Balls) to learn more about merchandising and designing for it. So, I came up with a few concepts (with the help of a few friends) and converted them into simple drawings which were then added onto shirts/cups/hats/bags/coasters/etc.
As a complete exploitation of 3d Studio Max's line drawing tools, I created the initial outlines in Max and then rendered them out to any resolution needed. Once rendered I would then add color in Photoshop using basic fills. Any sane person would use vector programs such as Illustrator to do this but I wanted to see how far Max could be pushed in this direction.
Soon after creating a few designs I used a local print shop to create t-shirts of a high quality. I then switched over to CafePress to handle the printing and distribution. CafePress took a huge cut (I only got $1-$2 dollars for each shirt sold) but I didn't have to worry about anything which suited my desire to just get these designs out there. (making $$$ was secondary) Since going with CafePress I've sold close to 1,400 products with the "What...?" design (slide 6) being my top seller.
This was a fun project to work on and taught me a lot about merchandising, brand recognition, etc. Plus, I have a collection of shirts, cups, etc. that I can proudly say I designed.
CafePress Store: MonoMal