This year I was in Stockholm and went to Skansens christmas fair. Lovely day, brisk winds but oh so cozy to walk around the different stands sampling food and drinks. For me it is a tradition to keep, if it was only a bit of snow too it will definitly put you in the christmas mood.
We had lunch at Solliden before going home.
If you are able then this is a thing to see when coming to Sweden. But all around the country there are christmas fairs around the advent holidays.