Dumbledore felt that no one should go without a gift on Christmas Day.
Therefore, he sent to each and every student of the school a new pair of fuzzy socks. Every student, even the nonhuman ones and the very large ones. The socks ought to fit. Dumbledore was famed as the greatest wizard of his generation, and all that!
All members of the Order of the Phoenix also received from Dumbledore an
additional gift, likewise enchanted to fit the wearer.
Merry Christmas to all, and to all a good night!