first room is an observatory/space museum, the other 3 are storage: one full of shrubs & saplings (i named it the home depot lol), the other 2 full of unorderables i'm holding on to sell.
Storage! Although it's mostly clothes and fruit, tree and bush starts etc so when I am done landscaping I'll make proper use of the rooms. I've finished Gracie's checks so I'll probably get rid of 80% of the clothes I am hoarding too c:
I store gyroids, and have complete furniture sets, because my house atm is to small to have them. I only have the second floor in Celadon, but I'd do the same for my other towns if they had it.
A Goodwill for animal crossing actually sounds cool lol. I use all 4 for hybrid/bush/mushroom/sapling storage for my shop, my locker gets way too full even without my collection of gardening things ;_;
I have my ice set in one room, snowman set in another room, and the other two I can't remember. They're all just for storage though until I feel like redoing a room in my house.
Room 1: All of Gulliver's items.
Room 2: A trophy room with all my trophies and some duplicate villager pics.
Room 3: My (incomplete) fishing tournament furniture set and gorgeous furniture set.
Room 4: The Pave and egg furniture sets.