Answer:
You fill it and it empties, A metaphor for plenty, Depending on what half you see, It's either full or empty
This is the main ingredient in spaghetti and Mac-N-Cheese.
You can break it or drink water from it.
An art-form and its colour-ful result.
A tasty reward given to well behaved dogs and kids
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?