Answer:
I can wake you up in the morning but I require no electricity or winding.
What did the thief get for stealing the calendar?
What is black when you buy it, red when you use it, and gray when you throw it away?
I fly away as soon as you set me loose. People around you may slowly move away once they sense my presence.
I am just two and two. I am hot. I am cold. I am the parent of numbers that cannot be told. I am a gift beyond measure a matter of course. I am given with pleasure when taken by force.
No matter how little or how much you use me, you change me every month.