If you’re looking for the cheapest possible way to digitize your 35mm Negatives and Slides, the Kodak Mobile Film Scanner is probably it. Costing just $40, this cardboard contraption lets you digitize 35mm film using just your smartphone and a couple of AA batteries. The Kodak Mobile Film Scanner is made up of a foldable cardboard stand for your mobile phone, a base that allows you to slot in either 35mm Negatives and 35mm Slides, and an LED backlight. This,…