Why spend money on cat food when there’s a more immediate solution? Leo Voelker’s 1979 invention simultaneously curbs the local sparrow population and keeps the local cats occupied.
The birds enter the housing at the top but can escape only through the mesh cage at the bottom, which serves as a kind of self-serve food dispenser for neighborhood cats.
“The cat feeder by its design is self-cleaning since the cat quickly learns to remove the sparrow from the cage.”
Mark Frauenfelder is the founder of Boing Boing and the editor-in-chief of MAKE and Cool Tools. Twitter: @frauenfelder. His new book is Maker Dad: Lunch Box Guitars, Antigravity Jars, and 22 Other Incredibly Cool Father-Daughter DIY Projects