Answer:
These are believed to be found at the end of rainbows
You can have it, and be at it, But it never lasts forever.
What is yours but only used by others?
In your fire you hear me scream! Creaking and whining yet I am dead before you lay me in your hearth.
What has black spots and a white face, is fat not thin, and helps you to win, but tumbles all over the place?
How did the farmer find his wife?