The following bundles include all characters, building and decorations pertaining to that event. (Each year is a separate bundle)

Christmas 2012 - 2021
Thanksgiving 2012 - 2020
Northward Bound (Thanksgiving 2021)
Tree House of Horror 2014 - 2021
July 4th 2013 - 2018
Easter 2014 - 2017
St. Patrick's Day 2013 - 2018
Valentines Day 2013 - 2018, 2021
Whacking Day 2013, 2016
Yard Sale Items
Stonecutters
Clash of Clans
Superheroes 1
Superheroes 2
Superheroes Return
Super Powers
Terwilligers
Pride 2015, 2017, 2020
Tap Ball
Soccer Cup
Monorail
Deep Space Homer
Casino
Crook and Ladder
Wild West
Homer's Chiliad
Springfield Games
Sci-Fi
Season Premiere 2016
Shelbyville
Homer the Heretic
Lunar New Year 2017
Destination Springfield
Rommelwood Academy
Secret Agents
Pin Pals
Time Travelling Toaster
Road to Riches
Homerpalooza
County Fair
The Serfsons
The Buck Stops Here
Bart Royale
Homer v. the 18th Amendment
Springfield Jobs
Who Shot Mr. Burns
Itchy and Scratchy Land
Poochie's Dog Dayz
Moe's Ark
Game of Games
Game of Games the Sequel
Flanders' Family Reunion
Simpsons Babies
Krusty's Last Gasp
Cthulhu's Revenge
Black History
No Bucks Given
Simpsons Wrestling
Summer Games 2020
Van Houtens
All This Jazz
New Year New You
Springfield Choppers
Rise of the Robots
Foodie Fight
Springfield Enlightened
Tavern Trouble
Into the Simpsonsverse
Breakout Bounty
Red Alert
Hot Diggity Doh
Hell On Wheels

These Bundles contain all of the characters, buildings and decor pertaining to that Holiday

THOH
Christmas
Easter
Thanksgiving
Valentines Day
St. Patrick's Day