Bokeh refers to blurry effects in photographs — purposely out of focus shapes that are creamy and wonderfully fuzzy. You can make your own bokeh using just some inexpensive black card stock.
Check out the original article and the reader comments for a discussion of the techniques used to create the effects in the photos, such as setting your camera to the lowest aperture value. Enjoy making dazzling, beautiful photos!
DIY: Circle of Confusion Shape Modifier [DIY Photography]