The other day geeksugar was eating a salad and complaining that the avocado had gotten a little mushy, brown, and overall blah-y. I suggested that she do what I do. Whenever I pack a sandwich or salad that has avocado as one of the ingredients I don't add the avocado until I am just about to eat it. Pack the made sandwich and the fruit on the side much as you would an apple. Then when you get to work or your picnic cut it open. It's easy to slice a ripe avocado with a plastic knife and you can quickly put chunks of the delicious fresh flesh on your dishes.