I am cold and often found in drinks. When it gets warm, I melt. What am I?

What never gets full, no matter how much you pour into it? Solve the riddle → I fall from the sky but have no wings. I make puddles and help flowers grow. What am I? Solve the riddle → I have a wide mouth but no teeth. I like to eat crumbs and small things from the floor. You hold me with a broom. What am I? Solve the riddle → What has many keys but cannot write a single word? Solve the riddle → What disappears as soon as you say its name? Solve the riddle →