Standard symbols from AIGA, via an Acts of Volition story with a neat link and a boring link about standard computer power buttons. I could see them being used in an FPS, or a graphical MU* with appropriate (or maybe even inappropriate?) theme.
Also, thanks to News is Free, I know Freezerbox has an RSS feed now. (Of course, there's a "Syndication" sidebar link, so...)
And of course there're always soda reviews.