Do you like helping people? Do you like Science Fiction or Fantasy? Do you know people who do? If any of these are true, take a look at the Worldbuilders fundraiser. Patrick Rothfuss (author of Name of the Wind - an excellent fantasy novel) is not only matching half your donation (you give X, he give 0.5*X in addition), but you'll be entered into a lottery of fabulous Science Fiction and Fantasy related prizes!
In short: Worldbuilders - give people baby ducks, boost your donation, and maybe get shiny things!