In my day to day activities I often find myself wishing I could go into the source code of something and change it so that it was more intuitive or to add a feature which would be easy to implement, but for some reason was never added.
What are some projects you wish you could contribute to but haven't or can't?
Highest on my list is my university's student services web-app. The interface is horribly clunky and any simple task requires 20 more steps than it should.