Sometimes I get more knitting done, sometimes it's more writing. Knitting and writing. I've tried other combinations. Painting and writing doesn't work -- I have to think about what I'm painting, which keeps me from thinking about what I want to write. Housecleaning is no good, either. I'm thinking about should I pick up the clutter in the living room or focus on the hallway instead of should my heroine fall in love with the cowboy or the sailor.
Eating and thinking about writing is a workable combination, but then you just can't keep eating all day -- or shouldn't.