Best anniversary gifts for her: More than just diamonds (but also diamonds)

Your anniversary: The one date other than her birthday that you are absolutely required to remember, and the date that will absolutely put you in the doghouse if you forget. While showing your love and appreciation year round is the most important, tangible gifts are just nice — and anniversary gifts can be crucial to keeping the mystery and romance alive.
The hard part: Being in a long term relationship means a lot of gifts over the years, and finding ways to keep gifts unique might start