The Festive Outfits package puts these Jolly Sentinels all over. I pictured all my NPCs wearing ugly Christmas sweaters, but no.
The Old Box of Decorations lines the walkways with candy canes and places wreaths of all sizes everywhere. I apparently didn't take a shot of Imported Trees which puts trees loaded with ornaments and gifts all over.
I started by getting my main character all the packages, and I was using a second character to do the daily quests for the "Savage Gift" which may contain a mount. As I was being dazzled by character ones' festive garrison, I thought it sad character two shouldn't also be awash in Christmas happiness, so I'm having her decorate her garrison to the hilt as well. So very happy making. It makes me think once again, if this is the only home we ever get in Azeroth, and they keep adding fun things to it over time, I will be very pleased.