Because they have an opening at the top, they can be used like a hurricane lamp, and are ideal for a pillar candle. There is also a sphere version. West elm also shows them filled with small decorative objects, like some sea shells or starfish, to help bring back memories of seaside escapes... Currently on sale, prices start at $34.99 for the closhes, and $7.99 for the bases. Selection is limited online, so we'd recommend trying to go to one of their stores as well.