Internet photo printing site Paper Culture has a product with strong appeal to artists and do-it-yourselfers looking to spruce up their tiki-themed rooms: they now offer a service that prints uploaded artwork onto bamboo-backed boards for frameless hanging. The edges of the board, which are visible, are much more attractive than foam core or plywood. There are four sizes, starting at 5.4 inches square and going all the way up to 17.8 inches square. I'm thinking about giving it a try.
Learn more about custom Bamboo Wall Art at Paper Culture