I don't know if any of you have ever been to
Maker Faire or not, but it is pretty much literally CHRISTMAS FOR GEEKS!!!!
I have been going since the first one in 2006 since I live near where it started.
If you are in the SF Bay Area it is this next weekend at the San Mateo fair grounds.
After the first year when it just exploded in popularity the city has figured out how to deal with it. Get there early, it is set up so that parking lots around town are on a shuttle loop and free buses run every few minutes to get you there. Totally worth any inconvenience.
If you are not local, they are now hosted in Kansas City, Chicago, New York, and now Rome. There are dozens of other independent locally hosted ones all over the world popping up too,
here is a list.
Seriously, if you are even a fringe geek, get thee to a Maker Faire, it opens up so many things to learn; and GEEK is celebrated everywhere. You will be one of the cool people.
ETA: Don't miss an entire exhibit hall set up with the biggest Tesla Coils you have ever seen doing battle!