GatKong's Christmas Pack
Been around since the days of alpha... updated over the years.
* Current version: 22.0 for Minecraft 1.20.4

What's in this pack:
-arrow icicles
-acacia_door animated holiday motif
-bee
-beehive
-bee_nest
-birch_door animated holiday motif
-bow icicle shooting
-cactus with baubles
-carved_pumpkin holiday colors
-cave_spider santa hat
-cow santa hat
-creeper grinch
-dark_oak_door animated holiday motif
-diamond block gift wrap
-emerald block gift wrap
-ender_dragon santa hat
-enderman santa hat
-ghast santa hat
-glass snowy touch
-gold_block gift wrap
-grass_block snowy
-gui theme
-iron_block gift wrap
-jack_o_lantern holiday colors
-jungle_door animated holiday motif
-lang/en_us.json holiday motif
-lapis_block gift wrap
-ladder 3D candycane motif
-lever candycane
-music_disc musical selections from the holidays
-oak_door animated holiday motif
-ocelot santa hat
-paintings
-pig santa hat
-polarbear
-poppy poinsettia
-pumpkin holiday colors
-quartz_block gift wrap
-redstone_block gift wrap
-redstone string lights
-rose_bush holly leaves
-sheep santa hat
-sign garland
-skeleton abominable
-spider santa hat
-spruce_door animated holiday motif
-string holiday lights
-torch candle
-totem_of_undying nutcracker
-trip_wire string lights
-witch krampus suit
-villager winter coats
-zombie gingerbread men
-zombified_piglin creepy elves

Music disc selections from public domain selection available at archive.org

"item.minecraft.music_disc_blocks.desc": "Here Comes Santa Claus",
"item.minecraft.music_disc_cat.desc": "Frosty The Snowman",
"item.minecraft.music_disc_chirp.desc": "Hallelujah",
"item.minecraft.music_disc_far.desc": "Hark The Herald",
"item.minecraft.music_disc_mellohi.desc": "Carol Of The Bells",
"item.minecraft.music_disc_stal.desc": "Jingle Bells",
"item.minecraft.music_disc_strad.desc": "The Nutcracker pas de deux",
"item.minecraft.music_disc_wait.desc": "God Rest Ye Merry Gentlemen",
"item.minecraft.music_disc_ward.desc": "You're A Mean One",

Omitted from the Planet Minecraft Download due to space limitations
"item.minecraft.music_disc_13.desc": "Misers' Melody",
"item.minecraft.music_disc_mall.desc": "Rudolph The Red Nose Reindeer",
"item.minecraft.music_disc_11.desc": "Oogie Boogie's Song",

Check out my other goodies, packs, maps, and mods here.