Most phones come with built in cameras. Many phones, like the IPHONE, have 3d apps you can download into the phone. These apps will have you take two separate photos of a scene and then they merge these two images into a stereo 3d image for you. The below image was created using such an app for the IPHONE called 3D Camera. If you have an Iphone you can search for that free app and download it to your iphone and start creating stereo images with your phone!