The primers can be punched out of FIRED brass with a pin that will fit through the flash hole inside of the case.
Or if you know someone who reloads they may have a decapper that will fit it.
Not hard to do, then you could thread a wire through it to hang it up. A knot on one end to keep it from pulling through and a loop on the other.
Alternatively you can just drill a hole through the primer, but it does have to be a fired case.
Gabby