Answer:
I'm the start of eternity and the end of space. There are two of me in heaven and one in hell.
The part of the bird, that is not in the sky, Which can swim in the ocean and always stay dry. What is it?
Securing your documents is easy with these trusty metal objects
What is always coming every day, but never arrives until the next?
Temporary evidence of where you've been strolling
Written on with words of white, Has the color of the night, Is the teacher's best delight, And a student's daily fright