How do you automate FBA web.config changes?

I was asked today by a friend, How do you modify the web.config through a WSP? My quick answer, I don’t! Not if I can avoid it other than the changes made through Visual Studio item properties like safe controls entries and others. However, showing my true consultant nature, I turned the question into the above. That’s a more specific question with a couple good possibilities I’d like to share, but still, it seems like there may be better answers […]