Clay's - I didn't change much overall, but the few things I did, like swap the log table and stool out for stone ones, make it feel more fitting to Clay imo. Clay's fortunate that the starter house doesn't feel out of place for him. I have plans to swap out the shelf and wardrobe at some point if that's doable (haven't checked lol), just lack a good replacement furniture item so far. Wanted to give him a few fossils, but I haven't come across many fitting ones. Also might give him a campfire or camping set thingy - that stove has got to go lol
Sprinkle's - This was before I gave her a pink laptop (which stays permanently on her loft desk, there's a sea globe there in the pic). Yes I know what her original house looks like, but I'm fine with this version - I put lots of shell/mermaid furniture outside her beachside house to make up for it. Keeping that soft-serve lamp there is annoying because that's where she keeps putting clothes I give her. You can't replace the stereo, loft bed or DIY bench.
Billy's - I wanted to give him some Japanese style furniture. I gave him a kotatsu, but apparently that's a winter item so he might not display it for a while. He's since replaced that tatami bed with a diner sign unfortunately, but I've yet to correct that. He also now has a grasshopper which fits him well. I have yet to find an alternative to his wardrobe, but honestly it looks quite good considering he probably won't replace his bed. Oh I also need to get him a black imperial chest lol. There was also a pile of zen cushions where that football is, but I doubt I'll be able to keep them there
Finally
Ursala's - sorry this is a crappy photo, but I haven't bothered with her house in a long time since she won't replace her sleeping bag and Idk whether to accept that and give her an ironwood cupboard, or keep that second bed where it is. I may change her natural garden stuff to the darker color, I just wasn't sure at first if it would look good on her wall/flooring