I don't know if you are even interested in beach theme, but WHAT a classy way to do it! Bubbles and shells all in pearl. Weddings Centerpiece Ideas on Need More Centerpiece Ideas Wedding Centerpieces Pearl Bling
(I love lights.and this is a marriage of lights and centerpieces). "Pretty reception centerpiece - made with silk flowers, an ice-drop garland, white LED lights, a glass vase, and shredded cellophane filler.