I guess you can do a collage for just about any occasion! Here is a collage that features a graduation announcement. I cut the backgrounds from the Memory Garden Digi Cart from SVG Cuts. The grad scroll is a freebie from 3/27/09.
I added some Gradient Gems & Gem Brads from Creative Charms . Learned a trick on this one - I had the collage all together and wanted to add the brads. I just took some wire cutters and snipped off the back of the brad and hot glued them down. I used an 8"x8" shadowbox frame from Joanns for this one.