I remember when my late brother-in-law the Jewish ninja (my sensei) got dimed out by his first wife, the cops came in with a search warrant, pilfered all his really good hardware, and just kept one gun in evidence to charge him with possession. After he got out, he divorced her and later married my wife’s sister.
Corrupt cops or govt agents like coin collections too. Small, easy to carry, and often worth a lot of money.