What sits on your head, but never combs its hair?

I have a special power to pull metal close. Often I sit on the fridge, holding notes in place. What am I? Solve the riddle → What keeps you on Earth without touching you, but weakens the further away you get? Solve the riddle → I protect things and often need a key. What am I? Solve the riddle → I get bigger the more you take away from me. What am I? Solve the riddle → What can pass through glass without breaking it? Solve the riddle →