Not very much at all to my knowledge, and I'm not even sure what I'd do in town if I lived there. You have some restaurants in the hamlet and nearby -- the better options are in the central part of Hyde Park and down into Poughkeepsie -- which is where you'd also start finding the bars, movie theaters, and so forth.
As for Haviland itself, though, I don't see very many things to do. You'll have to leave Haviland to find them. If it weren't for the steady traffic passing through on Route 9G, this would be a pretty sleepy area.
