Wow. So many things.

The first thing I would do is get a financial advisor. I would want to ensure that the money will keep coming.

From then on, it depends on how much money I won. As someone said, a million doesn't go as far as it used to. :)

I have some pet charities. And some pet projects I would like to enact, ranging from an interim house for homeless families to animal rescues. And a HUGE house for myself, which I would fill with people I chose, complete with cottage industry areas in-house.

And one of the first fantasies I ever invented: Musicians who played 24 hours a day, so that anytime I wanted I could wander down the hall and sit in on it or just listen. Each musician/group would have a set schedule before they moved on to their next gig. And every one of them would be WELL paid.

Oh, that reminds me: I would set up a Patron for the Arts system.