Add watermelon, 1/2 cup blueberries, 1/2 cup raspberries, and honey to a blender. Blend until smooth. Press through a fine mesh strainer to remove pulp and seeds. Fill popsicle molds 3/4 full with liquid. Add whole blueberries and raspberries to each mold. Insert sticks and freeze for at least 4 hours or until completely frozen.