Green’s Dictionary of Slang

pap feeder n.

a spoon.

1830		W.T. Moncrieff Heart of London III i: Two tattlers and their swag – the papfeeders – the whole lot for twenty guineas.
1858		A. Mayhew Paved with Gold 268: He was ready for anything, either to sing ballads in the ‘paviors’ work-shop’ (streets), or to ‘sneak down an area in the hopes of purloining a silver ‘pap feeder’ (spoon), or even a teapot, if it was at hand.