I’d rather spend our money on energy-saving lightbulbs than on happy...– Sarah (my wife), explicating her environmental commitment.
How to get an extra 5GB on Dropbox for free (!) →
Basically, you beta-test their new camera-upload feature (just make sure you back up your Dropbox folder first!). I did it, and boom - a free 5GB extra, which is super-helpful for school. So now I have 7GB total. Awesome.