Duck Pond Ideas?

[KylieMarie]

My ducks have outgrown their beloved large swimming pool. We don't have very much space for a large pond and just redid their pen and made it much larger, meaning we could build them something more permanent. So my question is does anyone have any ideas for a pond that would not be too expensive to build and would give my ducks a nice swimming spot. Thanks for all the help!

 

[brookesducks]

We found an old boat on Craigslist for 100 dollars and took everything out of it, buried it and filled it with water for our pond. I've ward of using an old bathtub too.