I have a couple of old Yashica Mat Twin Lens Reflex cameras and every once in a while, I like to break them out as a way to slow down and take a different style of photo. 

I really enjoy the square aspect ratio that comes with the camera, along with the manual focus. I get my exposures by using an iPhone light meter app.  I send my film to http://www.thedarkroom.com for processing and scanning.