A while back I signed up for Photojojo's Photo Time Capsule. What this does is twice a month mail you photos from your Flickr account that you uploaded a year ago.
It's a nice way to remember what you were doing twelve months ago as well as jog your memory on what style or cameras you were shooting back then.
As an example, here are photographs I posted to Flickr a year ago. The first two were actually taken during the previous winter in Stateline, Nevada but I guess I only got around to developing the film 11 months later. These were shot on a Yashica Mat 124G.
The other 3 photos were taken with my newly purchased Diana+ which had been released by the Lomographic Society a few months earlier. (The tell-tale square frame reflections give it away that this is a Diana+). I remember taking these in Shoreline Park in Mountain View, California.
So check out the time capsule and send photos to your future self.