I love Uwajimaya; I don’t know if they all have bookstores in them, but the one in Beaverton does. Kinokuniya. I could spend a lot of time in there looking at craft books, pens, paper.
If I want something not quite as refined, I go to Fubonn, which is a very large grocery/everything store in Portland. The produce is great. And where else can I get pig snouts? (I don’t, but they are available.)