Sell candy canes for $2 with a personalized note. High margin, zero preparation, and everyone loves a secret admirer!
Set up a gift wrapping service for the parents in the gym after school. All you need is paper, tape, and a few friends.
Colorful papers +pen + glitter + 10 minutes = a $10 keepsake. Put customized meaases. Low material cost, high sentimental value.
Re-sell donated gently used items like earphone, radio or $1 store finds to younger students looking for gifts for parents..
Have the "techy" students curate themed Spotify playlists. Sell access codes or "song requests" for the school PA system.
Invite kids and children for a photo with "Santa." in finny poses. People spend big on their little one'shappiness!
Sell kits containing a pencil, a piece of chocolate, and a "stress ball" (balloon filled with flour). High demand right before break!.