Check out the Kickstarter for Architects of the Deep: Book of Notices. This is a D&D companion source. It provides various notice boards for Dungeon Masters to use to help provide side adventures. The book includes over 300 boards to use in your next campaign.
You can pledge and receive these either by PDF or by softbound book with the PDF, depending on your pledge. The pdf could play well on line since many are moving to an online gaming format.