I love Lulu. It is a virtual book publisher for both adults and children. You can submit a book manuscript online, choose a binding for it and a price, and summarize it for others to purchase. If it is ordered, you can have it printed out and sold. No overage. No waste. Lulu also publishes calendars, music, information in all formats. So if you have written a novel and Random House has rejected it, go see Lulu. She just might have another answer for you.
If Lulu were available in a library setting, it could serve the purpose of providing online zines or privately published material to patrons. It could also be used by Collection Development as an alternative source for ordering titles not otherwise available from major publishers.