Cafepress is a great print-on-demand site that features a large array of products that can be customized. I have been using Cafepress to sell my designs on t-shirt, mugs, and stickers since 2005. Below is a gallery of images available on various products. Click on the image you like and it will take you to Cafepress' catalog of anything that design can be printed on. Go ahead, take a peek!
All available designs are HERE.