Tip: Switch palace switches normally disappear if you replay the level. However, if you insert them as direct Map16 and use the hex-edit at $00EEB2 in the ROM map, you can replay the level without a problem.
Mute's Christmas Quest, a two level SMW Mod that acts as a semi-sequel to Super Mario World: The After Years by EvilGuy0613. To sum up the plot, 7 months after Nova's defeat in the Industrial Lands, the Mushroom Kingdom has since been rebuilt to look more like the kingdom of years' past. Mute gathers gifts from the newly built Toad Town for Princess Cecilia, Lumine, and Allen Yoshi (the same Yoshi from "Super Yoshi Land: The Rescue Mission" as well as The After Years). As Mute and Cecilia talk, Yoshi alerts them that the gifts have been stolen by a couple crooks that went off to "The Abandoned Tower". Mute offers to get the gifts back, and thus his new quest begins in this new chapter.
The game contains a lot of inside jokes from EvilGuy0613's discord server that are hidden as easter eggs throughout the two levels, as well as giving the characters much more difference between each other. There are even some things you might learn from all the established characters thus far...
Disclaimer: Since this is a semi-sequel, I recommend you either play or at least watch "SMW: The After Years" to get a grasp of it's story before playing since the ending(s?) spoils a big plot twist, and will also fill in context if some things seem loose. Of course, if you don't want to, the game does a good enough job telling it's own story.