Use elegant glass containers or simple mason jars to call attention to your shell collection. One of my most prized shell collections is housed in a three-tier glass candy jar — one level holds small pieces of broken coral, the others hold a mixed collection of shells.
If you are handy with needlepoint, why not sew a mason jar lid with shells and the date of your vacation for a personal touch?
If you've found a shell with a hole in it or want to drill a hole in a shell, string it on a ribbon and tie it around a jar. Finish with a nice bow and you've got another decorating idea!