If you have ever inherited a photo album from a grandparent who took the time to caption the photographs with names, dates, and places, you will immediately appreciate the value of storing some documentation along with your home movies for the benefit of those who come later. Again, you should consider as broad an audience as possible, going beyond mere names and events to include facts that might seem obvious to your immediate family: the name of the town, the street address, the identity of the film maker. Facts and stories about the individuals in the films are always of interest, and anecdotes about people and places, traditions, rituals and unique events can make a wonderful film doubly intriguing.
You might even consider making an audio recording about the films, recorded during an actual screening of the materials, with comments offered “on the fly” in reaction to the imagery. When the film is over keep the tape running until you’re all out of reminiscence.