Answer:
Everybody's got one.
Sends paper without using the post office.
Two year-old children who throw tantrums get this nickname. So did the tsar "Ivan."
These are believed to be found at the end of rainbows
It carries paper of the most important sort but also plastic, I'm glad to report. What is it?
How did the farmer find his wife?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?