Software Freedom Conservancy (@conservancy) has raised over $132k but still needs $29k left to make their annual fundraiser. There's only 6 days left... if you have funding to give and are open to supporting them, it's definitely an organization that puts that money to very good use!
A couple of years ago I helped @conservancy with their fundraiser and actually made an *animated ascii art* program. (They also mailed out a physical postcard based on this design!) You could telnet in and watch it thank donors who contributed that year even :)
Fun fact, it ended up being an early test program of Spritely Goblins!