I recently noticed that I have a small amount of blank ammunition for M-16s and M-60s in my possession. It dates from my time in the Army National Guard.
I have no idea why I have it. Souvenirs, I suppose. But in case the police ever raid my home, that gives them the opportunity to say I had military-grade ammunition in my "arsenal."
Not that I have any reason to anticipate such a raid. I'm just saying. Nobody expects the Spanish Inquisition, after all.
I should probably get rid of it (safely) just in case!