What you need:
A mini easel and canvas (both easily available at any craft store)
A brush and glue or mod podge
A photo cut slightly smaller than the little canvas
What you do:
Brush a thin layer of mod podge or glue onto the canvas and onto the back of the photo. Place the photo onto the little canvas and press down to make sure that there aren't any large clumps of glue underneath. Remove the excess glue from the edges with a slightly damp cloth or paper towel. Let it dry and then display it on the mini easel.