When Mister acts like a big goofball, most of the time that will make me laugh. However, there are those times when foolish behavior backfires and only makes me more annoyed.I like cooking an extravagant (well, for me, anyway) meal. It's usually still cheaper than going to an extravagant restaurant, plus I get to take part in the creative process.
The bathtub, as others have mentioned, is also good. I usually take a glass of wine in with me. However it isn't always a good idea to partake of alcohol when you're down. In those instances, cocoa will suffice.
Pet a dog. Buy a new lipstick. Go for a drive or a walk.
Make something. Several years ago my wallet was stolen, with a large amount of cash, and a couple of credit cards, which were promptly used by the perpetrators. I had just got paid, and that was all my money. I sat in the floor and made a beaded necklace, one bead at a time, and it distracted me for awhile. I never wore it, and later on took it apart to use the parts for something else. I realized in this instance it wasn't the finished product that was important, but the process of making it.