Use acrilic paint on clothes, and fix it with vinegar. The Method: Stamp or otherwise make a print on a t-shirt using acrylic craft paint. Allow paint to completely dry (overnight is good!). Soak garment in a solution of 50% vinegar/50% water. I used white distilled vinegar to avoid staining the garment. When garment is saturated, wring out and throw it into the clothes dryer until dry to heat set, or if you prefer to iron, put a thin dishtowel over garment and iron (no steam) until dry.