Chaotic, yes, but there is a method to this madness.
Backgrounds generally match
The top row is object and colour-symmetrical (pair of candies/eggs, bluish, yellowish,blueish,yellowish,blueish).
The star potion links the bottom left shooting star with the bottom right blue ember
The middle bottom three are the three amigos!
I actually prefer lineups that aren’t super perfect and symmetrical, but i still like to try and have some form of pattern/theme. I like to think that my lineup rn portrays a tea party-type gathering with ruby and coco each enjoying a frozen treat and bringing along some plushie friends to share them with (moms plush, strange doll, voodoo dolls) and then the waluigi egg and sakura just looked nice in the center and also match the color scheme well. They probably look crazy to everyone else but my lineups make me happy haha ❤
was messing around more with lineups using the f13 candy earlier. currently is the eggs on the bottom row meant to color match the top row items, with blues/purples to the left and yellows/greens to the right. then celeste+star wand being just there I guess as a central flex thing, that also works out character-wise lol. plus a bit of item symmetry
here's the other ones I made (and liked enough to save) though, before stopping on what I have now
Yumeko and Christmas Yumeko and Christmas Yumeko and Christmas ☃ Edit: I have many various line up themed specifically after Yumeko ! I have many cakes and birthstones with Yumeko and Kakegurui references just right now I'm feeling florals and festive