Place raspberries and water in a blender and blend until smooth.
Pour about 2 tablespoons of raspberry puree into each cup, saving the remaining puree for later. Place cups in the freezer for 30 minutes.
Whisk together the coconut milk and chia seeds in a small bowl.
Remove the cups from the freezer and distribute the coconut milk mixture evenly among the 6 cups.
Return cups to the freezer for another 30 minutes.
Remove cups and place a popsicle stick in the middle of each cup, return to freezer again for another 30 minutes.
Lastly, distribute the remaining raspberry puree into the cups and freeze until set (at least 4 hours)
Peel the paper cups off before serving.
Notes
For the optional add-ins:-Add coconut or vanilla extract to the coconut milk and chia seed mixture when whisking together.-Add lime juice and/or honey to the raspberry and water mixture when blending.