I always say that I could use a "wedding shower" more now than I did 15 years ago!
Not too many brides-to-be are living at home before they get married these days and need everything ....most couples are merging two homes/apts and still have a shower.
Even if they've been living together, you'd probably be surprised at what she might actually need. New spatulas, measuring cups/spoons, etc....all those little things that do need to be replaced. How about pretty dish towels? A new laundry basket with some padded hangers? Doesn't have to be expensive, but you could find some theme and put a few things together.