1. While preferring more practical fashion, with simple shirts and shorts or skirts, that goes downhill the moment we start talking accessories. Fukukitaru's tendencies to hoard and especially want for good luck tokens to always be with her would probably lead to her consistently wearing looots of accessories, from necklaces to bracelets to hairpins etc. While her clothing may be simple and not weight a lot, there will always be dangly things all over her.
2. Don't think the "practical" fashion just means "plain shirt and jeans" though. This simply means she prefers pieces with more ease to put and move around, that won't get stuck on places, but she still enjoys cute, customized pieces with lots of patterns, sewn things and, especially, colors. Usually goes for bright tones for good luck and fortune.
3. Talking about colors. Girl has no clue on how color harmony works. Send help. She just wears whatever she thinks looks nice without a care in the world for matching things, just putting pattern and color one after the other. Sometimes it might work out, another times a color will stick like a sore thumb and that's okay.
4. On the topic of the accessories, lots of symbols and signs associated with luck or general mysticism from basically any culture out there. Sevens, clovers, mushrooms, butterflies, horseshoes…
5. Same as above, cats. Maneki-neko's def warped her to be more than favorable towards cats and she loooves pieces with cats on them.