Answer:
I am one small little piece of paper yet sometimes hold lots of value. I am all you need to get in to big events but will cost you. I am an important part of travel. And if lost you're not coming.
What is full of holes but still holds water?
I am the ultimate killing machine used not once but TWICE I can be made by humans.
I can swim but never get wet. I can run but never get tired. I follow you everywhere but never say a word.
The more you take away from me, the bigger I shall get. What am I?
A little house full of meat, no door to go in and eat.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic