My bench grinder died and when I took it apart the shields looked like cat faces. Added them to old fuel filter canisters, valve springs, RR spikes, spider gears, timing chain, and a spring trap to make 100% recycled kittens. Couch Potato is an indoor Lap Cat, his short legs are sufficient to waddle from couch to cat bowl and back. His eyes are spider gears with the gear faces painted purple. I kept moving him around because I couldn't get a pose where his eyes showed the color or depth in a photo.