Cut up a variety of fruit and mix together. It's that simple!
1 granny smith apple
1 pt. blueberries
1 qt. strawberries
1 large seedless orange
1 large bunch of green grapes, halved the large ones
2 purple plums
2 cups bing (sweet) cherries
Add apricots, mango, raspberries, red grapes, honey-dew melon, etc.
I avoid bananas unless I add them only to the portion we eat that evening or it gets brown and mushy. I usually just leave it out.