I made a snack the kids actually liked today!
sliced pears and apples with the mandolin (really thin)
spread on dehydrator sheets
spray with fresh squeezed lemon juice
dehydrate to desired crispness
If you don't have a dehydrator you could try setting the oven at the lowest temp setting, propping the door open with a hot pad and setting an oven thermometer in the oven and monitor it. I never had much luck with this but it is worth a try.....