We found this great tip from www.lifehacker.com to be especially useful for packing in school lunches. What a great idea! "If you or your kids prefer sliced apples you'll either have to take the time to spray the slices with acidulated water or learn to enjoy brown apple flesh. Kids lunch weblog Another Lunch shares how Australian parents send their children to school with fresh apples—simply make four slices around the core of the apple, hold the apple pieces back together, and place a rubber band around the apple. If you immediately place the apple back together it will resist oxidation and all you have to is remove the rubber band to have four largish apple slices ready to eat."