All you need is a bag of lava rocks, a bowl, and your favorite fragrance oil, like the Hotel Diffuser Oil Inspired by The ...

And a few minutes later, the boy and his family returned several large lava rocks and two bags and black sand that they had in their carry-on bags. "O.M.G.

According to The Huffington Post, local post offices have been receiving packages with no return address, containing only rocks and other removed portions of the Hawaiian landscape.