Re salad: StJ I think you're right when it comes to e.g. a lettuce, but certainly in my fridge (sample size of one!) bagged salad (i.e. pre-chopped and washed or chlorinated or whatever it is they do to the stuff) fares better (takes longer to go limp) if we clip the bag shut.
Re freezer contents: we have magnetic scrabble letters and keep an inventory on the door!!