illustrated by Laszlo Gal 1991
There's an old Scottish saying, "When you're done eating, give your eggshells a beating, never leave them whole!"
For if you do, as a young boy learns from his grandmother, the sea witches will take them and make them into boats. Out on the sea they will conjure storms and havoc and wreck any luckless ship. An interesting tale told in haiku form.