Updates:
Insimenator
Sims 3
Still running its donation drive
http://www.insimenator.org/index.php/topic,115536.0.html
Around the Sims
Sims 3
Advent Calendar starts Dec. 1
https://aroundthesims3.com/
Sims Dreams
Sims 3
Advent Calendar
https://www.sims3dreams.at/Forum/misc.php?page=Adventkalender
Kris-Vicious Sims
Sims 3
24 Days of Christmas plus other items
https://krisvicioussims.tumblr.com/tagged/downloads
Once Upon a Time (Downloads)
Sims 3
Christmas deco
https://uponatimedownloads.tumblr.com/post/189819692259/downloads-mesh-credits-soloriya-merry-christmas
Silver Owl
Sims 3
Deco turkeys
https://silverowlblog.tumblr.com/post/189809807981/deco-turkeys-sims-3-found-in-decor-1
Mspoodle
Sims 3
Secret Santa gifts
https://mspoodle1.tumblr.com/post/189795613201/this-is-my-secret-santa-2019-gift-to
Gruesim
Sims 3
Sliders (Secret Santa gift)
https://gruesim.tumblr.com/post/189810771069/secret-santa-i-was-also-a-unicornie-secret
Tripstaynoided
Sims 3
Houses
https://tripstaysnoided.tumblr.com/post/189836825692/ts3-grapefruit-house-and-buddhas-finger-house
Simbeings
Sims 3
Community lots, poses
https://simbeings.tumblr.com/tagged/ts3cc
Blacky’s
Sims 3
A number of things, Advent Calendar - Door 24
http://www.simszoo.de/
Mod the Sims
Sims 3
Toy maker career, sim, farm
http://www.modthesims.info/browse.php?gs=2&f=38&showType=2