Beach shells can sit alone as a decorative accent in the bathroom, on the fireplace mantle, or on the kitchen window sill. They are good reminders of a fun vacation or trip to the ocean.
Seashells are useful as q-tip holders and nightlights (I have a couple) and even planters. Years ago the Calusa Indians in Florida used them as soup bowls and digging tools. Seashells were so plentiful in Florida and other places that they became a source of currency. The cowry shell was used most often as money, but other types of shells were used according to what was available.