As part of the West Coast Wikipedian at Large project, all signed-up volunteers got a weekly "virtual postcard" delivered to their Talk page. It summarised the past week of work, listed possible articles to concentrate on in the coming week, and thanked volunteers for especially good work. Each one contained a photo I'd taken during the week, and had a "stamp" mocked up from an old New Zealand stamp with a Des Helmore sandfly drawing. All volunteers received a thank you to their Talk page at the end of the project.