Slice apples, soak in cold water for 3-5 minutes, then soak in a lemon-lime carbonated soda (such as 7-up or sprite) for 3-5 minutes. Divide into snack size portions and store in Ziploc bags in the fridge. The lemon-lime soda will keep the apples from browning and make them last longer.
Here's a cool way to ditch the waste producing disposable dryer sheets: Take your favourite liquid fabric softener and soak an old hand towel or flour cloth completely with it. Wring it out and let it dry completely, then throw it in with your next load. This mega-fabric softener sheet should be good for at least 40 loads of laundry, stretching out softener use and lessening waste