Here is a cute Octopus Pillar Candle Holder that I found in Pier 1's Pillar Candle Collection.
Something completely different, a whitewashed stone candle holder with a glass container from Willow House. The candle holder allows you to add a little Sea Glass!
Lovely Glass Bowl on Stand that shows off hand collected seashells beautifully. Idea via The Decorated House.
Create a little Beach Zen with Rocks and sand, using a Straight Sided Clear Glass Bowl. Via Country Home & Interiors.
Display in Clear Glass Bubble Vase by It's Overflowing, featured on Coiled Rope Art Display Ideas.
An elegant Silver Tray that's beached up with a thin layer of sand and a few shells added. Via Wunderweib.
Glass Hurricane Vases come in many different designs to fit your style. You can use these outdoors too since the flame is protected. Create a grouping of two or three, using different heights. Featured on Decorating with Seashells.
Similar candle holder display idea, using Clear Glass Cylinder Vases. A simple design with clean lines that goes well with a modern look. Seen on Chris Lang Weddings.
Decorative Lanterns are so charming and have lots of character. Just add a few beach finds to them! They are perfect for outdoors too. Pottery Barn has a great selection of lanterns.