Junk Mini-Pond and Solar Pump
I was over on the Garden Junk Forum and stumbled into a post from dcarch, who is my favorite poster. I expect to see him in the Cooking Forum but just found that his art and ideas are extensively displayed on the 'Junk' forum as well. I thought that his old post from 2010 on repurposeing an aluminum frying pan for a bird bath would be appreciated here. Both the design and pump application might be useful here.
Here is a link that might be useful: Take a look.