Anthame

An athame is a knife or dagger for ritual purposes. It’s not used to cut anything physically. Conventionally, it has a black handle and a double edge, and it is used to direct energies during the rituals. For example, to command and summon elementals and spirits. It is a projective tool that, within the system of classical elements, represents the Air and should be placed on the East side of your altar.
Read: Do’s and Don’ts of your Athame »

Once you have decided what your athame will be, you can customize it with a symbol that means something to you or represents you. An example would be to inscribe your name or draw a pentagram. But it could be anything you want as long as it means something special for you.