More to explore:
How to make a water pond garden in a pot. DIY
DIY Mini Pond in a Pot (not sure about the goldfish part): Add some goldfish and you wont have mosquito worries. Use gravel instead of the dirt and the water will be clearer #diy #pond
Container water garden. One comment suggested adding bladderwort to the plants for mosquito larvae. Another DIY source: http://deepgreenpermaculture.com/diy-instructions/building-a-small-water-garden/
Porch pond water gardening idea. Instead of soil/clay, use pea gravel, it will not muddy your water. Just rinse the gravel well before adding to your pot. Plants? I put lilies in my sunny pond every spring and they stay there all summer.
Diy flower pot water garden
Easy Homestead: Water Garden add a few minnows to keep mosquitoes at bay. Great way to have a small water feature in our yard!