I'm pretty simple and cheap...My ideal day is a beautiful day by the lake with my butt parked in a lounge chair, sipping a cold beverage (probably Peach Fresca) and reading a book; then, listen to some tunes while I nap. Take the dogs for a little walk once or twice. Those kind of days are definitely the most relaxing!
OR...an auction with awesome stuff
OR...when it is snowing out, I love to make homemade bread or cinnamon rolls and cuddling on the couch reading a book
Hope it's cooler where you are than it is here! Take care of you!