Traditonal Som Tum, a Thai dish is made with green papaya. Since I didn't have any green papayas handy (plus they are hard to find in groccery store sometimes), I substituted green papaya with shredded zucchini and kohlrabi which I had harvested a couple of days ago from my garden.
The texture of kohlrabi was very close to green papaya as it was crunchy. Zucchini worked well too, but maybe made the salad just a bit watery. Besides substituting green papaya with zucchini and kohlrabi, I added some mint (from my garden) to the salad.