Place all ingredients in a blender and blend until smooth.
Place a tray or a cutting board under the gummy bear mold to help transfer to the freezer. Next, fill the gummy bear mold with the mixture using a dropper.
You can make the remaining mixture into popsicles or drink it as a smoothie.
Freeze until solid (about 4 hours for froyo bites.)
Recipe Notes
You can blend the watermelon with its seeds—no need to discard.