I have these clipboards in my hallway that I use as an easy photo gallery. Recently I added a few pictures from my trip to Ireland.
I always use iPhoto to print my pictures for this gallery because you can customize your printing and add a mat border around the image. You simply need to click on the button that says to customize. You will see options including various styles and colors. I love how it adds a little added polish to the photos and saves a great deal of money by not having to mat them!
Teachers, note this is a great trick to use if you wish to display student photography projects!