Answer:
What can be any size or shape and gets bigger the more you take from it?
What is it that you ought to keep after you have given it to someone else?
I'm the son of water but when I return to water I die. Who am I?
Lots of them make up a word, And lots of words are in them. It's easy when you think about it. A while ago we stamped and mailed them.
What is used by man, tossed by trees, everywhere but unseen?
What sphinxes employ and players enjoy.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?