How could I forget--fortunately grahamb's screen name reminded me--add Chocolate Covered Graham Crackers to the list of things worth bringing.

Also, of course, I agree with other posters that there are some good local chocolate manufacturers; Moonstruck in Portland, or theo in Seattle are among them, even though a lot of their products are quite pricey and may be too sweet and fanciful for European tastes. See's is relatively reasonably priced, but a lot of the flavors haven't tested well with my European friends. Some people enjoy chocolate covered macadamia nut, as these are somewhat exotic (Morty Seinfeld: "Hey! You know what these cost, they're like 80 cents a nut"), but I wouldn't bring them unless you actually are from, or travelled to, Hawaii. Stay well clear of Godiva, it's the kind of gift that says, I thought of you, at the duty free shop, and I was not afraid to spend the money.