In the Isle of Man we celebrate Hop-tu-Naa which predates Halloween. Lots of similarities to "trick or treat" etc, but the kids hollow out turnip lanterns, or "moots" as we call them, and have to sing for the treat, the most popular song being:
Hop-tu-Naa
My mother's gone away
And she won't be back until the morning
Jinnie the Witch flew over the house
To fetch the stick to lather the mouse
Hop-tu-Naa
My mother's gone away
And she won't be back until the morning
[Jinnie the witch was an alleged witch dating back to early 1700's]. Us poor kids used to make a bundle of stuff, kept us in sweet heaven for weeks afterwards.