In this I will show you how to create a driftwood bookshelf. You do not need many materials and most of them are pretty cheap and the major one is free depending on where you live. You will need to find out if it is legal to take driftwood from the beaches in your state not all states allow this to happen, but some of them do.
You will need:
Driftwood quantity depends on the design you are going for.
Twine I purchased mine from Wal-Mart.
Glass for the shelving I purchased mine at home depot.
Some type of anchor to secure it to you wall(just in case it does not end up all that stable)