Make Your Own Coasters - tiles, scrapbook paper, Mod Podge, clear spray paint and felt. Adhere to tile with Mod Podge and let dry. Spray a coat of clear spray paint and let dry. Attach felt pads to the bottom.
Its a DIY project with just canvas,masking tape paint: tried it. A lot harder than it looks. paint bleeds really bad even with good tape. I ended up just using orange tape on white canvas and white tape on orange canvas (spray painted) looks great!