Martha Stewart's good things really are pretty good occasionally. I really like the idea of memorabilia tins:
Keep your favorite vacation ephemera, such as maps, menus, and fliers, on display by using them to decorate tins. Begin with a tin, such as a soup can or spice box. Remove any paper labels. Measure the height of the container, and cut a long strip of your paper keepsake to the same height. Wrap the paper around the tin and mark it with about 1/2 inch of overlap. Cut away excess. Attach one end of the paper to the other, using a glue stick.
For a bit of childish variation, think coloring pages, cross words or comics.