This includes reuse and reprint fees from publications, stock photography sales, print sales, consulting, teaching, etc. Some photographers make more money from these things than assignments. But markets, particularly stock photography are changing. Be realistic about how much you can earn from such sales. Realize that selling stock takes up time that could be spent getting and fulfilling assignments. Remember that for the sake of our industry and your future, extra income and side jobs should not subsidize assignment rates that are unfairly low.