On author appearances

I'm thinking I should probably have an author's appearance sometime soon, to correspond with the early stages of Christmas shopping season. I've only had one so far this year--probably my lowest number since I first got published.

What do you think? I haven't contacted anyone about it yet, but I'd imagine something could be set up to benefit my host. And do you prefer your author appearances to be just book signings, or something else, such as readings or Q&A's?