You can ink up your stamp with any fabric ink (there are some, like the brand Fabrico, which come in ink pad form specifically for this purpose). Just follow the instructions for setting the ink. Most fabric inks are "set" by heating the product after you have stamped. A good tip is to put a piece of thick cardboard between the layers of t-shirt to prevent the image from "seeping through" to the back layer.
Now one of the top on-line publishers in the world, LifeTips offers tips to millions of monthly visitors. Our mission mission is to make your life smarter, better, faster and wiser. Expert writers earn dough for what they know. And exclusive sponsors in each niche topic help us make-it-all happen.