There seems to be a lot of lessons wrapped up in this story. One, never under estimate the things you can create with a vacuum cleaner. Two, there are benefits to giving employees personal time. And three, a 1,000-page book can be scanned in an hour and a half with the right equipment. Or so we've learned from Google Books engineer Dany Qumsiyeh, who - along with team mates - has created a $1,500 book scanner and made it open source.