I love the idea of an art collective, and have been curious to learn more about a London-based collective I recently read about called Janfamily. Founded by Royal College of Art graduates Nina Jan Beier and Marie Jan Lund, the group creates art in all mediums, including music, photography, and film. Earlier this month, they staged an event at the Tate Modern called "Clap in time", where they entered the museum and all started clapping at a specific time, inviting everyone in the building to stop what they were doing and join them.
Their book, Plans for Other Days, which you can view selected pages from on the Janfamily website, is a how-to book or according to the artists, "a list of proposals on how to relate to our surroundings", with brief instructions and photographs on topics such as "how to find what you are looking for" and "how to be in two places at the same time." Here are a couple more: