We make raisins every year from the Manukka grapes we grow. Washed, then dried the grapes. They take a long time... sometimes 18 hours but they are worth it. We use raisins all year long in our hot cereal. Trial and error will help with timing. You want to make sure you don't let them dry out too hard.
Also, we sliced cantaloupe this past fall and dried it. It was yummy. Just make sure you don't over dry it. We will doing this again next fall.