Do you use many (and mostly) open source projects? I am starting to wonder if I am not exploring enough of this type of projects to find one I could add something to.
While programming I use a lot of libraries, most of them are open-source. A lot of developer tools are also open-source. I use a few open-source "desktop applications", although I haven't really contributed to any of them (I tried hacking on one or two of them, but not to the point that it lead to a contribution). I use a bunch of web sites that are open-source (forum of a community I'm involved with, stuff like that). A few browser plugins I've actually contributed to as well.