After the end of the credits, there is a seven second scene, all in black silhouette on a blue background. One of the elf-lowering-cables descends, pauses, then lifts up an elf, who proceeds to throw snowballs at the screen until it's all black.
Towards the end of the closing credits, the silhouette of an elf is shown, appearing to be digging. A moment later, he is buried by a small avalanche of snow, which is also in silhouette, before disappearing from the screen.