Green’s Dictionary of Slang

bits and bats n.

[Yorks. dial. bits and bats, bits and pieces]

(UK Und.) knick-knacks; items of jewellery.

1972		Dodson & Saczek Dict. of Cockney Rhy. Sl. 23: bits and bats. Knick-knacks; spec. jewellery.
1984		Partridge DSUE (8th edn) 85/1: C.20.