I wanted something to match my outside DS covering (it's Tetris), but I will probably go with the Isabelle Town Bulletin one. I was just thinking of wanting a theme like two days ago. I used to not care at all.
I'm a cheapo when it comes to spending themes so I usually just buy any Zelda theme then be done with it. Right now, it's still Majora's Mask and the others are free themes (SMT IV, Sonic, Dragon Quest, etc. haha)
I have mine circulating through a few, I have Sable, KK, Isabelle, and Jack themes and a cute pumpkin kitty one, it just cycles through them all so each time I open my 3DS or quit a game it surprises me. =]
lol im using the default white one because i cant be bothered to fix it because homebrew keeps resetting it so Yeah . i dont even have any of those stickers out