Pancake lenses are just one of those interesting conversation starters amongst photographers. Tools like these get you into a different mindset of how you compose your shots, much like how you would reconsider your style of photography with Tilt-Shift lenses. Here's a cool little Pancake lens by Loreo called 'Lens in a Cap'. It's about 35mm and adjustable from F/5.6 - F/64. It even acts as a Body Cap protecting your sensor when you don't have a lens on, but at the same time, it's ready to shoot when you are. You can find the Loreo Lens in a Cap here, starting at $24.50 + Free Shipping.