Just looking around my own kitchen and thinking what I would like...
An apron made in her kitchen colors and in a pattern you know she'll like. A Hot pad to match the apron. That wine bottle cover someone already mentioned, to match the apron.
I like the casserole carrier, matching the apron, one that's heavily insulated.
Not quilt related, but one of my old favorites is the scrubbable magnetic grocery pad that hangs on the side of my fridge.