Paperstone coasters by Dinah Coops are completely green. Each coaster is made from paper-stone, which is made from 100% recycled paper infused in non-petroleum based resin. Each coaster is also silkscreen printed by hand, treated with a protective coating of water-based polyurethane and silicone, and fully backed with a thin layer of cork. This is what I call going green from the most basic thing. Of course, the most basic function of a coaster, it will fulfill, but you can also use it as trivets, trays for candles and vases and may be even wall art. In the coaster category, you have lot of variety to choose from and all the coasters (single piece) wears the price tag of $12.00.