A repository of things that need repositing.
When I go hiking, I put together KMZ files of my route, the points of interest, the geocaches I hunted, and the photographs I took. This is where I collect them:
By the end of this year, I hope to visit all of the named summits of the Santa Monica Mountains. I maintain a file in Google Earth that lists their locations, including some guesses and some things which may not exactly qualify as peaks.