What people use:

Razor blades,
Scalpels,
Broken glass (from a mirror or a drinking-glass),
Needles,
Pins,
Anything they can use they will self harming is just cutting it can also be many other things like:
Burning,
Pulling hair,
Over dosing ,
Punching,
Interfering with wounds,
Alcohol abuse
Drug abuse.
Often the body’s natural pain killers will take over so when a person harms themselves they frequently do not feel realistic pain.