J Schatz Egg Bird Feeders
I came across these beautiful, if expensive, bird feeders in Dwell Magazine. At $125 each I don't think many of us will be buying them, but hopefully it will spur your own thinking about bird feeder designs you might be able to build using your own unique skills.
The web site claims that these feeders "deters" Grey Squirrels, but I don't think the feeder has been developed that can withstand the amazing inventiveness of these little devils. (SMILE)