If your lettuce is a little limp, not crisp and crunchy like you want for a salad, you can soak it in ice water and it will revive like magic! Cut your lettuce for the salad, then put it in the salad spinner. Then fill up the spinner with cold water enough to cover the lettuce, then put in lots of ice. Let it soak for 10-15 minutes or so, and it will be nice and crisp! Then you can lift out the inner spinner bowl and dump out the water and spin your salad.
I was so glad to find this out because for some reason, the red leaf lettuce I like is kind of limp in the grocery store. Now I know it can be revived!