Answer:
What is filled with air and sometimes a gas, tied to a string and often seen on your birthday?
Before Google, we actually had to physically look things up in this building full of knowledge.
Where can you add 2 to 11 and get 1?
What ship has no captain but two mates?
What can be seen but not touched?
How did the farmer find his wife?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?