I have decided to post an idea a day until Make Something Day.
Materials Needed: printing block, carving tools, brayer, screenprinting ink, tracing paper
Draw (or trace) your image onto tracing paper, lay the tracing paper on your printing block and apply pressure to transfer the image. Use your carving tools to carve away the negative space. Use your brayer to apply the screenprinting ink and stamp onto your shirt. Heat set your design with an iron. Once you have a stamp, you can use it on everything from paper to fabric.