The Architect's Bird Feeder
Designed by architect Doug Patt (he's also one half of bi-coastal firm Rootphi), the Architect's Birdfeeder is made of eight interlocking polycarbonate (think bulletproof glass) pieces. Like Rootphi's Flat Pack housing, the structural elements ship flat and require no tools or fasteners for assembly.
The upshot is product that's fun to put together, easy to refill and clean and eco-friendly. It also looks like a bird feeder from the future, which makes for a nice contrast with birdseed, trees and birds.
The feeder is available from the site for $25.