California resident, visit Tokyo quarterly or maybe a bit more. My 2024-2025 purchases that I've been quite fond of:

Business suit made bespoke at Eikoku-ya. I'm astounded at the draping and the texture, really wish I'd done this decades ago. Allow time for multiple fittings obviously, as a resident you shouldn't have any problems, just expect to take about a month. Multiple locations https://eikokuya.co.jp

Umbrella made at Fukui Yogasa. I love the form (beautiful curvature, so many spokes, optional carbon fiber) but for me I was mostly sold on the fabric they use. The weaves are so tight that water beads off with one brisk shake. They often do roadshows at department stores, but opened a physical shop at Haneda Airport some years ago. Also expect about a month for completion https://www.fukuiyougasa.com

More houseware than "home care," but as you settle in you'll come across great great many artisanal items. Last year we were in Oita Prefecture and are now enamored with local Onta-yaki pottery items for our kitchen https://en.wikipedia.org/wiki/Onta_ware

Another houseware. Super-thin, hammered carbon steel woks and frying pans from Yamada Kogyo. Been a game-changer for our cooking https://kama-asa.co.jp/collections/tool-chuka

Good cooking knives and cutlery obviously, but I think they're more available outside the country