Younger fitness-oriented people may want to have a look at the Apple Watch.

If you did not save one many newspapers will sell you the paper from a particular date.
Give your spouse a bouquet of paper flowers, what an impression that will make if you actually make the flowers yourself.
In 1957, Emily Post expanded her anniversary gift category list to include yearly gift categories for every anniversary from the first anniversary to the fifteenth anniversary and gifts for every fifth anniversary celebrated after the fifteenth anniversary.
Being a very practical person Post’s anniversary gift categories were such that you could find inexpensive gifts that fit the early year’s category types and practical gifts that fit many of the later year’s categories. Many couples try to go a bit off script to find themed gifts associated with a great experience they shared.
You can include photos, programs, ticket stubs, dried flowers, and anything else that memorializes a special day or event in your relationship.
To do this right you have to plan ahead and save up all those little souvenirs.
If you are looking for scrapbook materials try or visit a Michaels store in your area.
The front page of a newspaper from the town and date when you were married or where you first met is a simple but great gift to commemorate that very special date.
Paper flowers take a long time to make and show thought and they never die and hopefully that will be the same with your love. There are instructions for making paper flowers on How Stuff Works.
If you are not handy with craft work the folks at Just Paper Roses do excellent work.
This gift shows beyond a doubt that you consider the relationship vitally important and you are in love every day.