I would buy the house I am living in. Buy a bigger one later but secure this one too.
I would go on vacation first and foremost as I need a break. I'd pay someone absolutely lovely to look after DS part of the time on vacation so I could have small breaks from him. I think I would go to Austria, France, then somewhere tropical.
I would repay any tiny little bit of debt i could locate in my life.
I would go shopping, endlessly.
I would go out to dinner in a nice restaurant.
I would relieve my family and friends of any financial worries. Most especially my sister, then my Mom, then everyone else. Its just they are the ones in the most dire situations.
I would buy every single book I ever wanted to read. I would SCOUR the internet and bookshops for books.
I would give to charity but not sure off the top of my head which one yet. There are so many. I might even set a new one up.
I would buy an original oil painting of Marie Antoinette. I would buy anything that ever belonged to her that I could find.