Not only do they stock the buoys that I was on the hunt for, you can also purchase glass floats, nautical signal flags, maps and oars. While these items can be kitschy if overdone (unless, of course you happen to own a cottage by the beach) they can be a great focal point in a room if well incorporated.
• Mason and Serena's Sunset Beach Bungalow House Tour
• Vintage Style Buoys, Set of 3 for $50, from Nautical Seasons
• Nautical Flags, Set of 4 for $60, from Nautical Home
• 6" Glass Floats, $15, from Nautical Seasons
• Antique Finnish Paddle, $35, from Nautical Supply Shop
MORE NAUTICAL STYLE ON APARTMENT THERAPY
• Nautical Flags hung as art in “K & R’s Seaside Retreat”
• Oars hung on the wall in “Shannon & Aaron's East Coast Yuppie Bungalow”
• “Summer Style: Neat and Nautical Interiors”
Images: As credited above.