I came across these nautical map coasters and thought this would be a great idea for a little DIY project. All that you would need are small wooden squares (which could be cut to size at your local home improvement store if you prefer not to do any cutting yourself), a nautical map, decoupage glue, and clear laquer for a protective finish. For an antique / vintage look, try dipping the map in tea before gluing them to the wood. Simple and affordable nautical decor and/or vintage coastal decor.