C.V.
A good thermometer, like a Braun ear scanner or an Exergen temporal scanner.
That's my go-to gift.
ETA: I completely disagree with the attitude the "this is her second kid, so she doesn't need a baby shower." And why would she save everything for 6 years? I know some of the items I used with my boys were RECALLED (cribs with sides that lower, for instance). And why isn't second baby special, but first baby is?