Student Club: Project Ideas?

Hi,

I'm a senior at a University in the states, and I am trying to get an electrical enginnering club going at our school. I don't have a problem getting kids to join, or participate in activites, I have guest speakers and tours already lined up for the school year. But I'd like to be able to give the underclassmen something to do. Build something or make some little competition among themselves. But I'm having a hard time comming up with good projects or competitions for them. Could anyone here please give me any ideas? Anything would be welcome.

thanks for your time