We affix one of our lovely air plants to one of nearly a dozen types of shells ranging in size from 1 - 2.5” in length at their longest point, then we attach a magnet to the shell container. The magnet allows you to attach this piece onto your refrigerator, filing cabinet, parts of your desk, a vehicle – basically anywhere you can think of that has a metal surface on it, giving you maximum display options for an already versatile product!