In a previous incarnation of my working life, I flew for business a lot. And when I say a lot, I mean as much in a month as most regular humans fly in their entire lives if those particular humans happen to fly way, way more than anyone else they know. Sadly, no one had been clever enough to invent the Knee Defender – a pocket-sized solution to the moron in front of you that wants to bash your knees with his mad reclining – at that time. I happily would have paid 100 dollars for these. Each. At just over twenty bucks these are a steal for even the most casual flyer.