What am I Riddles

I can be rolled
In my hand you can hold
You can use me in a game
I am insane
What am I?

I feel hard and round
What goes up must come down
I live in a box
I lock up at a finger touch

 I help you spell
And there's many of me too
I'm rough on the back
and I spell moo
What am I?

I feel hard and soft
I'm the only one
I am very good you would use me everyday
I live in the bay and say nothing
What am I?

You use me to write
I feel pretty light
I am the colour green
When I'm lost Miss Prokop's mean
What am I?

 I feel hard like card
and I bounce and I pounce
My colour is orange and brown
I sometimes bounce to town
What am I?