Slice the watermelon in 4 large pieces. Using a melon baller, scoop out and create 32 watermelon balls. Alternatively, cut watermelon chunks into 1 inch squares. Set aside.
Cut each prosciutto slice in half. Set aside.
Create a pattern with your skewers. Start by folding your prosciutto in a small square and thread, then a watermelon ball, a mozzarella ball, and finally a leaf of basil folded in half. Repeat the pattern twice on each skewer.
Splash a tablespoon of balsamic vinegar over the skewers and sprinkle with a dash of salt.
Notes
*You can omit mozzarella for a dairy-free version. Repeat the other 3 ingredients 3 times.