"An apple a day keeps the doctor away" Serviceplan and AOK brought this saying to life in a very attractive and tangible way: the month begins with 31 apples in a specialised tube made out of UVA and UVA resistant Plexiglass. Every day you remove one apple from the tube and eat it, thus giving boost to your health. The rest of the apples in the tube move down and reveal the date on a hidden calendar.