Mushroom facts and ideas for a setting /u/Exieon DnD: Roll for Initiative!

I am contemplating making a campaign set in a world taken over by giant mushrooms (a basic faerun-ish world, standard races, probably standard gods, etc). The takeover started several decades prior to the campaign, unsure how far back specifically. I like the idea of some characters being alive before the mushroomification happened, and others not. I have multiple notable ideas already for the setting, a lot of them drawing from mushroom facts (yes i already have mindcontrolling/zombie funguses covered). Im looking for interesting facts or ideas i could use with funguses when it comes to the world’s ecology/worldbuilding. Even for potential encounters/plot hooks.

TLDR gimme neat mushroom facts or ideas for worldbuilding.

I am contemplating making a campaign set in a world taken over by giant mushrooms (a basic faerun-ish world, standard races, probably standard gods, etc). The takeover started several decades prior to the campaign, unsure how far back specifically. I like the idea of some characters being alive before the mushroomification happened, and others not. I have multiple notable ideas already for the setting, a lot of them drawing from mushroom facts (yes i already have mindcontrolling/zombie funguses covered). Im looking for interesting facts or ideas i could use with funguses when it comes to the world’s ecology/worldbuilding. Even for potential encounters/plot hooks.

TLDR gimme neat mushroom facts or ideas for worldbuilding.