Sims 4
Advent Calendar
https://sims4.aroundthesims3.com/
My Oasis Springs World
Sims 4
12 Days of Christmas
https://myoasissimsworldcontentforthesims4.wordpress.com/
https://arelenriel.tumblr.com/
xBelorSims
Sims 4
December gifts
https://xbelorsims.tumblr.com/
Linzlu
Sims 4
Advent Calendar
https://linzlu.tumblr.com/
Silver Hammer Sims
Sims 4
Advent Calendar
https://silverhammersims.tumblr.com/
Tic Tac Toe
Sims 4
Advent Calendar
http://stefizzi.tumblr.com/
CoatiSims
Sims 4
Advent Calendar
https://coatisims.tumblr.com/
Sim Pearls
Sims 4
Advent Calendar
http://simpearls.co.uk/simpearls/index.php?board=131.0
Sims Dreams
Sims 4
Advent Calendar
https://www.sims3dreams.at/Forum/misc.php?page=Adventkalender
Your Dork Brains
Sims 4
Christmas Calendar
http://www.yourdorkbrains.com/
Blacky’s
Sims 4
Windows
Day 13, 14 of Advent Calendar
http://www.simszoo.de/
Mod the Sims
Sims 4
Deco, house, sprites
http://www.modthesims.info/browse.php?gs=4&f=38&showType=2