What Am I Riddles

Question: I'm made up of 12 completely different letters but you can type me with just 1, what am I?

Question: Poke your fingers in my eyes and I will open wide my jaws. Linen cloth, quills, or paper, my greedy lust devours them all.

What am I?

Question: You wear me every day but you never put me on.
I will change colors if you leave me out too long.

What am I?

Question: Sometimes I'm high and sometimes low,
and I creep between your toes.
My orders come from the sky,
I make men fall and rise.

What am I?

Question: Six squares and a straight line, I can tell you anything; from what's thine to what's divine.