Green’s Dictionary of Slang

1. the male genitals [note trinket n. (2)].

1629		R. Brome Northern Lasse V vi: Humphrey, and I with the tricks and trinkets we have about us, will cure the mad Maids of her standing in the Town.
1630		J. Taylor Bawd in Works II 95: pack: a necessary male for a man to trusse up his trinkets in.

2. (US Und.) personal weaponry, i.e. a knife and revolver.

1859		Matsell Vocabulum 92: trinkets Bowie-knife and revolver.
1895		Crowe Aus. Sl. Dict. 88: Trinkets, revolver and knife.