Two kids in the classroom gift exchange give each other $20 gift cards from the local toy shop. They both react like it's the perfect gift and hug. The camera flies at warp speed to the shop register where the owner gives a double thumbs up to the camera (chaching sound and $40 readout on register) and then it flies back to the hug.
The hook line for the "Every Year" song will say "Every year I'm left out in the cold." At the end when he meets the other outcasts, the reveal is that Ned is singing the song slowly and before he can say "cold" the others sing it in a rising harmonic chord one at a time.
At the end, the Xmas kids come as a group to invite Ned to an Xmas party but he says no thanks and goes with the outcasts to get Indian food at one of their families' restaurants. The Xmas kids' invitation is totally insincere and they even say that their parents forced them to do it or else Santa would only give them grocery store gift cards. Quick cut to the mean Santa saying "Harsh."
Maybe the closing song is "Indian Food" talking about how it's good for Christmas. Maybe the mean Santa is eating there when the kids arrive.