I don't have the 2nd floor yet, but my plans are: Nintendo-Room (i don't need that Fortune Cookie Stuff in my house), Photos of Villagers (only keep the ones i like in my home) and maybe Hybrids if it is possible to put them indoors.
I am going to fill mine up with cloths in one room I dont know what I will do with the rest (I have yet to unlock it yet tho so I dont know how big they are)
I haven't got the 2nd floor yet either, hopefully only a couple of more days till Blathers mentions it to me. I haven't decided what themes to do my rooms yet but you guys have given some wonderful ideas
I'm not sure if I should make exhibits that are sort of museum related, ie. they seem like they'd belong in a museum, or just making rooms full of stuff I like but have no room for...
I figure I'll go with the first one, because I have 6 rooms in my house which should be enough for most of the things I like, and I can always reorder other stuff from my catalog, plus I'll have inventory room. So I think I will make a space exhibit, western exhibit, Nintendo exhibit... and possibly a world tour exhibit, with all of Gulliver's items.
I've got gyroids in one room, and most of my Nintendo items in another. They're mostly for storage right now, though, since both exhibits are kind of messy.
I don't quite have enough items yet, but I am interested in making a space exhibit as well.
I created a town public library and a mario themed room. I was going to make a gryoid room but there's not enough space for them. Thinking about making a game show room too!
I made a gyroid room, a room displaying all the gems in class cases, and a room with the triforce on display with the palace wall and floor. I'll change them later when I get more items. Not sure what to do with the 4th room for now. I was thinking of a seashell exhibit.
I haven't got the second floor yet, but I'm thinking
-Space-themed room
-Egyptian tomb
-Seasonal Room with different items for different seasons
-Event Room (Halloween/Christmas/Easter etc)
It might change when I see the size of rooms and whether I need more storage for clothes and such...