The pond in a pot is already serving another purpose. One of my cats loves to drink water out of anything that isn't his water dish - a dirty bowl in the sink, a muddy puddle on the outdoor table, a glass he just knocked over, or a pond in a pot.
Take a walk with me through my little garden. It's my oasis in the middle of semi-urban, inner-eastern Melbourne. I grew up in rainy, temperate Oregon so learning to garden in dry, warm Melbourne has been an interesting challenge.