If you're lucky enough to hold your wedding reception at a seaside location, it's likely that you'll carry some of that theme throughout your decorations. One great idea is to display pebbles, shells, driftwood and even sand in creative arrangements to create your centerpieces, which will bring some of the seaside to you. This is a really fun idea as it gives you the opportunity to go for countless walks along the seafront in the run-up to your wedding, in order to look for items to include!