I am of the belief that collages look best when they are hung up on the wall in a picture frame.
Many people prefer to keep them in binders or notebooks, but aren't they much better when they are on display for all of your guests to see? This also solves many other problems.
Rather than trying to decide on one photograph to put up on a wall you can put up several (with a true collage frame if you want it to look more professional rather than artistic).
This is also a great way to enjoy and protect your many photographs at the same time.
This is also a great way to display many of the digital photos you have hidden away in a hard drive somewhere.
Many of these photos are spectacular but never see the light of day.
You can simple print them out, crop them to look the way you want them to, and add them to a great collage.
This art form minimizes the differences between real photographs and digital photographs.
On top of that you can easily enhance the way your artistic creation looks just by choosing the right frame.
They can match just about any theme you can possibly think of.
You will probably want a frame that already has a mat in it for creating collages.
You can then find frames in thousands of different sizes, colors, materials, and styles.
With mat board frames you can also draw and write on the mat to further customize your creation.
If you are going for the professional photo collage look you can buy a "true" collage picture frame.
These look like normal picture frames but have many different slots for photos.