I appear in a monster's hand, but I am not a weapon. You might see me in a bakery.

What contains thirteen hearts, but not other organs?

I’m full of holes, yet full alright. Squeeze me tight and I will grow light.

When you need me, I’m more important than most But when you find me when you don’t need me, I can be rather gross. As a whole I’m round but used in squares I’m soft so you can barely can hear my tears

Part of my name is found in all books, But I read in numbers for an easier look. Of all of Hermes forms near your belt’s where I snook, With one sound from me and you’ll need to give a ring like your shook