Years ago, I used to smoke a pipe. This was before the anti-smoking nazi's kicked the smokers in the plant out into the storm, so we could smoke in meetings and such.
I had a piece of 30/06 brass I had fired, then resized the cartridge, leaving the primer intact, then I had seated a bullet into the case, and used it for a pipe tamper.
I pulled my pipe kit out during a meeting one day, loaded my pipe, then set my stuff on the table in front of me. My area supervisor, looked at the tamper, picked it up, turned it over, saw the dimpled primer, and put it back with a grin.