Watermelon Salad with Lemon Cake Croutons and Blueberry Balsamic Glaze

watermelon cut into small cubes (~1/2 – 1 inch size)

fresh blueberries

feta cheese (optional but recommended)

(~1/2 cup) chopped fresh basil

lemon cake croutons (see below)

blueberry balsamic glaze (see below)