I would spend it our with my children, they are my favourite thing to do, I work from home so I am often spend time working on my own and my son has started university so I would go and see him with my daughter and spend the day out together.
I would be confused at first....then gather my thoughts and head for the car before someone called me back to say "fooled you". First I would head to my fav spa. Mani/pedi, cut/color, facial and a very nice long massage! Next, off to my fav bookstore with a nice cup of anything warm (it's cold and raining here in NY) so I could find a book that I've wanted to read for so long yet never seem to find the time to do so. Look for the biggest comfy sofa and there I'll sit for a few hours. Then off to the Mall for some shopping and by that time I'd be missing my family so much I'd ask hubby to meet me for dinner and to bring all the kids!
I would start my day with a nice cup of coffee, meet my girlfriends for breakfast, and then off for haircut, mani/pedi, spray tan, and message! (all the things I always say I am going to do..but never do) I would end the day with a exquisite dinner at a 5 star restaurant ( I don't remember the last time I dined out ), then relaxing bubble bath, and good book. Awww, I feel better just imagining this....
go out to lunch with my best friend and have lots of cocktails! Then we'd hang out at one or the others house and go through our clothes or something while we were still tipsy and laugh at each other :)
A day to myself and the money to afford it- I would definitely go get a nice LONG LONG massage, a mani/pedi & get my hair done :) Throw in time to read a great book and I'd be in Heaven :)