Get paid for doing open source code. It'll give you good karma and internet points. Definitely give you the 400 a month you need.

We just started our open source task site but there are two notable tasks for the languages you listed: Fix Audio Sync against Video in live555.cpp, $500 http://nextsprocket.com/tasks/fix-audio-sync-against-video-i...

Nokogiri pure-Java version for JRuby, >$600 http://nextsprocket.com/tasks/nokogiri-pure-java-version-for...

the nokogiri problem's been around and people are dying for a good solution!