Since Oktoberfest holiday is starting up, why not add some fest outfits, badges, backgrounds and borders to the advent calendar and or marketplace?
A pretzel border would be brilliant. A foaming beverage in a stein badge would not be amiss. Traditional folk costumes, and a full stein accessory, pretzel or a brewer's paddle will work. A beer tent background would be nice.
Those cosmetic items would work for both Oktoberfest and Frühlingsfest.