My equipment is for 5 gallon batches. I have thought about picking up a 3 gallon carboy for a smaller batch. We have not drank alot of my wine since we were not really happy with it. I have since decided that I don't like Rieslings very well, even commercial ones. I do like Pinot Grigio's though. My wife's dad makes wine and his plum wine is really good. I think the wild plums are still out on my in-laws place. I may go see if I can round up enough of those for a batch.
I'll decide in a week when I get through this week. I think I would like to try a couple 1 gallon batches of something. We have a home brew shop close so I'll go see if I can get a 3 gal carboy also.