Ideas for High School Computer Club Activities?

angryLNX asks: "This year, my high school's computer club started running out of project ideas and fun things to do as a club. Over the years, we have done the website, the Linux box and the TV announcement system. Does anyone have any ideas for projects or activities which would be worthwhile? Any good or bad experiences with certain high school computer clubs? Since we're in Connecticut, maybe it would be fun to attend a certain conference in New York?"