I just came across a site that makes unique gifts out of photographs.
The company is called Design a Mosaic, and when you order a photo mosaic from them with create a custom photo gift out of a series of your own photos using one main photo as the main image.
The remaining photos are used to compose the many cells with in the main photo to make an image, that when viewed close up reflects the many photographs that make up the picture as a whole. It’s amazing how they do this. See the sample photo mosaics on their site to see what I mean.