Is there anything in Gnome Love that could be split into bite-sized pieces to be done in 15-minute increments? Like, bring in an easel, pick a few missing Tango icons, and go from sketching a few ideas to finalizing, digitizing, and submitting a new icon? That would be small (yet rewarding) interactive demo of a full contribution cycle. And of course make sure everyone involved in the demo gets their name in the submission so they get recognition.

You could also do a similar demo (maybe at the same time) with cleaning up a few paragraphs of documentation.

I think 15 minutes would be enough time to build some interest in someone who was borderline (or, I think more likely, interested but not motivated enough to contribute otherwise) to understand how easy and fun it is to add to the project. Yet it’s not such a small period of time that it’s easily forgettable.