Sometimes the cremated person has thought about what they want to be done with their remains and have shared their desires with their family. Cremated remains can be kept in a container called an urn, which in turn can be buried on cemetery plot or placed in a depot called "columbarium", or thrown into the air or water of a place that was special to the cremated person, or buried anonymously in the ground. These are the most popular choices of what to do with remains. There are also other, less common, options of how to dispose of the remains. Some examples of ways to scatter the remains are: through fireworks, shot from guns, or dropped from an airplane or hot air balloon. Remains can even be sent into space or turned into a diamond. The latter can be done because humans and diamonds are both made largely from carbon.