Answer:
You can carry it everywhere you go, and it does not get heavy. What is it?
Proof you've done your time in school
What has holes on each side, but can still can hold water?
Two year-old children who throw tantrums get this nickname. So did the tsar "Ivan."
What gets bigger the more you take away from it?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.