Answer:
The man who invented it doesn't want it. The man who bought it doesn't need it. The man who needs it doesn't know it. What is it?
Only one color, but not one size. Stuck at the bottom, yet easily flies. Present in sun, but not in rain. Doing no harm, and feeling no pain.
Long and slinky like a trout, never sings till it's guts come out.
Covered in stone and sun. It's home to many but also none. What is it?
What surrounds the world, yet dwells within a thimble?
What do angels sing in the shower?