Katie Barry 10.20.09 11:29 PM Life's title, 30 Dumb Inventions, almost says it all. A curved machine gun?Babies in cages hanging outside of windows?Illuminated tires?A good reminder - not all innovation is good! We’re giving away 5 tickets to the Innovation Festival! Enter below. I’ll also get special updates regarding the Innovation Festival Send I'd also like to receive the Co.Design Daily newsletter.