To create a 3D scene you need two cameras normally (to shoot for left and right eyes). While this Instructables tells you how to shoot a 3D photography with a single camera.
Here you can read the steps
You may be also interested in the following article from Digital inspiration which tells you how to make your own 3D glasses in 10 seconds. This includes two videos which are 3D Glasses with CD Jewel Case and 3D Glasses made from Sunglasses
Create 3-D Glasses at Home - Read more on that here