The Museum Shop has a line of coasters based on the old Early Ship series of stamps issued here in 1980. These stamps were a ubiquitous sight on almost all mail during the 80's, particularly the Fujian Junk one (15c) because that was how much it cost to send a standard letter back then.
The coasters are simple: the stamp design enlarged and printed on a plain white tile, with a sheet of cork stuck on the bottom. At $5 a piece, they're affordable.
I've always thought the designs were very appealing. Clean, crisp line drawings with minimal colouring and Helvetica typeface. The photo taken with my dinky Palm doesn't do it justice at all.
The Banyan Tree should consider selling a set of coasters containing each stamp from the Ship series.