Normally, I don't suggest buying them anything, since money cannot express such a genuine memorable gift. However, I'm thinking a photopass cd or album might be just the ticket. Like the old song said,
"making memories, making memories,
taking pictures is making memories,
catching little pieces of time,
making them yours, making them mine.
Happy faces and celebrations can fade away in a year
When you're making memories, happy days will reappear.