If you've ever struggled to find meaning, everything that makes life worth living is in The Little Prince by Antoine de Saint-Exupéry. It is the most complete answer I've found to the nihilism that is creeping through our generation, and I gave Lu a copy within a week of meeting her.
This is a diorama that she made for me. The scene is framed by a junk drawer and each of the knickknacks within relate to a central concept from the book: a ceramic fox waiting to be tamed. A drink of water. A rose unique in all the world. The objects themselves are nice to look at, but their context gives them beauty. This is a kind of Little Prince-ian idea.
Taken together with the personal touches (the scarf/napkin from our first date, among other things), it's the best gift I've ever received.