If you owned a camera before the digital era, the chances are good that you have a bunch of old negatives kicking around. What if you want to convert those negatives to true-blue digital photos?
Scanners and developers are expensive, but if you've got a DSLR kicking around, you can convert them all on the cheap. With this clever trick, you simply stick a few toilet paper tubs on the end of your lens, attach a slide mount to the end and snap away.
It's fast, easy and, best of all, cheap. So why let those negatives gather dust unseen? Digitize 'em and share 'em with the world!