Answer:
I regularly change shape yet remain a sphere. I am always there but not often seen. What am I?
I go up and down at the same time. Up towards to sky and down towards the ground
A hundred arms, a thousand fingers, but I have no eyes to see where I linger. What am I?
Everyone has me and no one can lose me. What am I?
Where did the baseball keep its lemonade?
Before Google, we actually had to physically look things up in this building full of knowledge.