Answer:
I begin and have no end. Eventually I will be the end of all that has begun.
I have been the beginning of ideas for all time yet I am just one simple small object the things that you can use me for can be frustrating and also I can be pretty. I have some of the most valuable thing in the world on me yet almost everyone owns me.
I am lighter than air but a hundred people cannot lift me. Careful! I am fragile!
What jumps when it walks, but sits when it stands?
What do you get when you cross a cow with a trampoline?
Why did Mickey Mouse go to outer space?