Place the yogurt, watermelon, blueberries and honey into a blender and puree until smooth (for a chunkier texture, pulse the mixture until desired texture).
Fill eight 4 oz (125 mL) popsicle molds or paper cups with yogurt mixture. If using paper cups, cover top with foil and poke a wooden craft stick through the centre of each pop.
Place molds on a flat surface in the freezer for at least 6 hours or up to 2 weeks.