I have so many pots of all sizes, and was thinking the other day "what can I use this flattish pot for?" It's too shallow to stay wet enough for flowering plants in our desert environment, so I've decided to use plastic pots for my nesting boxes. They'll be so easy to remove and clean! There's a picture of a shallow one at this website: http://www.plantcontainers.com/b2-035.php I also have a deeper square one that I'm going to try. Now I'm wondering if a small hanging pot, hung just at head height, might suffice for a feeder?