Almost any styrofoam sheets, plates, etc., will work - draw images with a regular ball point pen, impressing enough for a clean design. Dilute acrylic paint to the consistency of cream, then paint the print plate. Turn it over and lower it down onto plain white cotton fabric, then rub a little. This technique gets you some artsy, imperfect, striking bits for using as focal points in collages or quilts.
Every year, we like to make the five hour drive to what I call "the Disneyland of the art world". The open markets, the art and scenery, the southwest cuisine - is there anything NOT to like about Santa Fe? They also have a few new microbreweries in the last couple of years, too, which Bob loved! What a fun (and relatively inexpensive) getaway.