Thanks Steve and Robin we are fortunate to be within an easy drive of two fine wine regions. The Yarra Valley is an easy 30 minute drive, the peninsula is about an hour. It makes for a great day, wonderful country and views, a nice lunch in great environs and a glass (or three if you are not driving) of some very fine wine.
One of the touristy things you can do out of Melbourne is a bus winery tour. They drop in to a few wineries along the way for tasings and you have lunch at one of them. I believe they are quite popular.