A search of the Bodley Ballad collection gives the following list



Oyster-shell bonnet and dandy chignon (About fashion, not actually oysters)

Oyster boat ("Oh, swiftly goes the oyster boat ...")

The oyster man ("You've heard of a dandy dogs meat blade ...")

The oyster girl ("Many a knight and lady gay ...")

Oysters, sir ("Many a knight and lady gay ...") (same as Oyster Girl?)