I used a piece of burlap ($3 a yard at Hobby Lobby) and frayed the ends for the runner, then filled some jars we already had with sand and seashells. I purchased the shells a couple years ago at Pottery Barn during their "after summer sale" so they were super cheap. I found this sand-covered sea horse at Home Goods for about $8. Home Goods also had starfish garland on a rope for $7, but I cut the starfish off of the rope.
I love using books in my decor, and just took the jackets off for a more natural feel. The large piece of coral was from Crate & Barrel, but I saw on The Stories of A to Z, that Beth spray painted inexpensive colored coral from WalMart's pet department, and I thought that was a genius idea!
The bowl below usually holds Hershey's kisses!
The faux orchid is from Crate & Barrel. I plan to put it in a shiny silver pot, but for now, I'm keeping it as is, looks more "beachy" this way! And I didn't really need 5 pounds of sand for this project, but even at Lowe's the little bags (that I would've needed 3 of, were $5 each). So $3 for a 5 pound bag it is!