Actually... I had the room first, before the boys came and took it over. And a nice room it is, with windows on three walls and a wood floor (which is much better than carpet, when you're working with pins and littering threads).
And yes I do want it back someday. But I think maybe I'd rather have it as a bedroom, because it is right under the eaves and the rain on the roof makes such a lovely lullaby at night...