I vaguely recall a kid's song about herring that I can't find in DigiTrad. It goes,

"What shall we do with the herrin's head? . . . We'll make it into loaves of bread. Herrin's head, loaves of bread, And all manner of things."

It's one of those cumulative songs (is that the right term?) where the verses keep getting longer as more parts of the herring are added:

"Herrin's tail, boat with a sail, Herrin's fins, needles and pins" and so on.

If anyone can supply the rest of the song, it would be a good addition to DigiTrad.