An idea, inspired in large part by Matt’s Demon-Haunted World talk, and Mike Kuniavsky’s The Coming Age of Magic: a notebook that demands use, and complains loudly to you and others when you neglect it.
The notebook would have a unique name and id, and a daemon would watch for “tribute” — online sharing of what you put in it.
The tough bit of implementation would seem to be defining a way to pay tribute, and to make it fun and easy, rather than onerous.
Implementation ideas to follow written up here.