As an interior designer, I've loved Lumicor’s decorative large resin panels for years.  Their extensive inventory boasts over 250 décor options.   Here is a small selection of coasters showcasing botanicals, embroidery, fabric and digital printing laminated between the resin sheets.
 
3.5" square x .25"h
Small white felt dots on back of each
Cleaning: Use warm water, mild soap and a soft sponge or cloth to clean Lumicor. Do not use alcohol, glass cleaners, acetone, lacquer thinner, solvents or abrasive compounds.