Off the top of my head (no pun intended), I think the bun wig would be a must for Leia.
I'm picturing a QR for her white outfit. I think the basketball shoes would look best with it, if you can overlook their name.
The white leather shoes are too off-white, and the white patent shoes have a black bow. The basketball shoes are at least white and high top/boot-like.
You know the round electric sign Amiibo item? You can customize that with a pattern, right? (I haven't tried.) It would be funny to have it look like the Death Star on someone's wall--especially if that someone had a starry wallpaper.
Also, the hologram machine reminds me of Leia. (I assume that's what Nintendo intended)