FreeBSD is driven by volunteers. If you have time you can spare,
consider helping the FreeBSD project:
http://wiki.freebsd.org/
Some Summer of Code & other projects that didn't get funding would still
benefit from unpaid help. FreeBSD code projects & server admin would
surely love to have someone donating two or more hours a day free, to
benefit FreeBSD globally.
http://www.freebsd.org/news/newsflash.html#event20090510:01
The work you do makes excellent resume material, as well providing you
with potential employment contacts.
-Snow
(With thanks to Julian Stacey for an excellent idea.)