If coastal scenery spins your propeller, try this Devils Punchbowl Coaster.  Devils Punchbowl State Natural Area is a day use park on the central Oregon coast between Lincoln City and Newport. 

It is centered on a large bowl naturally carved in a rock headland which is partially open to the Pacific Ocean.  During storms, the ocean slams into the hollow rock formation (aka the punchbowl) with a thundering roar.  The surf churns, foams and swirls as it mixes a violent brew. The punchbowl was likely created by the collapse of the roof over two sea caves and then shaped by wave action. 

The coaster is an actual picture epoxyed on to a piece of tile finished with clear coat and a cork under layer.  Handmade in Oregon, 1 - 2 coasters cost $9.95 ea and 3+ coasters cost $8.95 ea.