I pass a Powerball billboard every day on my way to work. As the numbers change, I do some mental math and figure out approximately how much I would get out of the jackpot if I take it in a lump sum, take the taxes off the top, then pay it out to myself over the next 30 years... (and people think I'm paying attention to the traffic! Hah!)
The first thing I would do is give my two-week notice. Then take two weeks' vacation.
We'd have a big party for all our friends and then invite them all on vacation with us.
We'd put some aside in trust funds for the kids.
Then we'd set up a Connecticut Robotics Education Center (I already have the building picked out) with dorms, classrooms, a facility to hold tournaments, machine shops, etc.
Then I'd figure out what other charities I wanted to support.
Then, if anything was leftover I'd buy a used car to replace my Jeep. Well, OK, maybe a new Jeep. Or maybe a lamborghini... hmmm...

Oh, and a log house in the mountains.
And a beach house at the beach.