I got this idea from younghouselove.com, who in turn got it from a Pottery Barn catalogue, but I am absolutely loving it. The idea is to commemorate each vacation you take by storing small mementos and souvenirs in a jar - one for each vacation. In PB and YHL, they used canning jars, but since I'm an avid candle burner, I had a lot of these pretty glass candle jars laying around the house.
Eventually I'll label each one (maybe if I get a label maker as a birthday or Christmas present? lol) but since I've only made three, it's pretty easy to keep track of them. I still need to go through some boxes and see if I can find a few souvenirs from other trips we've taken together, but I'd say we're off to a good start.