Frosty Bus Stop Riddles for Winter Mornings

I puff out like a tiny cloud whenever you laugh in the cold. What am I?

I keep homework dry even when mittens fumble. What am I?

I squeak when boots shuffle salt on the curb. What am I?

I flash yellow to warn drivers that kids are waiting. What am I?

I wrap around noses before the first headlights appear. What am I?

I sip cocoa slowly while you wait. What am I?

I count bus numbers through foggy glasses. What am I?

I collect tiny snowballs made out of boredom. What am I?

I blink from backpacks so cars see us in the dark. What am I?

I turn benches into glitter when frost arrives early. What am I?

I buzz from phones with weather alerts. What am I?

I hold library books on my lap until door five opens. What am I?

I wave frantically even though I am only paper. What am I?

I creak open just enough to block the wind. What am I?

I roar up with warm air and a folding stop sign. What am I?