Granny

Concept: “This dread creature is sure to haunt your players right where they’re safest: In their own homes. During the holidays. Sneering with judgment.”
Content: A bitter, cheer-killing wight; includes description, stats, special mechanics, and scathing remarks
Writing: Captures the spirit (maybe literally) of an overly-critical matriarch
Art/design: Overall, horribly festive with progressively creepy grandmas
Usability: Plenty of flavor to really help the GM get into character