Annual Riddle Poem Edition

Each year my students write riddle poems. Here are a few pretty good ones from this round:

I smell as though a thousand years
I can be sad and bring many fears
Romance, fantasy I'm sometimes called
I'm creative and with me people have bawled
I make new worlds that are real and fake
I am as great as my creator make
Many shapes and sizes, skinny or plump I do come in
But the real great treasure is the one within.
A book

i am clear as a diamond
no color or shape
too much of me is deadly
but if you dont have enough of me you can die
many people try to run away from me
and they just cant because i am too fast. 
what am i?
water

Good times never last,
I should never have let you go,
I'll never forget my careless mistake,
All the time I prayed for your reappearance,
But you never floated back home.
A balloon

It is fluffy in the inside,
soft on the out.
In the night it has a head,
But when the morning comes,
then it does not.
What is this?
A pillow

The Real Treasure:
Yes, I'm partially in gold,
and in some part of diamond
Look at what it takes to get victory.
Yes I'm somewhat in money.
Check in these things
and you will see
my true identity.

What Am I?????
Love

(The answers appear in ghost post below each riddle.)