I went with the kids to Maker Faire this year and it was a blast. If you have kids I highly recommend it. Where else can you get a chance to do arc welding?
There was a group of people there presenting a large metal sculpture they built of a woman with her hands outstretched. Every so often the sculpture would burtst into flames that originated from her beating heart. These same folks were doing demonstrations of arc welding and invited kids to come and try it themselves. My kids joined in the fun and got a great experience out of it.