Answer:
I am lighter than air, but a hundred people cannot lift me. Careful, I am fragile. What am I?
I build bridges of silver and crowns of gold. What am I?
What comes once in a minute twice in a moment but never in a thousand years?
I am milky white and scares people.
We are little airy creatures all of different voice and features one of us in glass is set. One of us you'll find in jet. Another you may see in tin. And the fourth a box within. If the fifth you should pursue it can never fly from you.
No matter how little or how much you use me, you change me every month.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic