I think it is ways nicer to make your own Advent calendar instead of buying one. The most common Advent calendar filler are probably sweets, like chocolate, bonbons or other dainties. Chocolate, twenty-four days in a row...not very eventful. Therefore it's nice to buy some other things as well, as a kind of weekly highlight if you want. That might be a bit more expensive than sweets, but it is definitely healthier :)
Here are some ideas for sporty ones, Jetsetter, Karl Lagerfeld fans and girls who know how to enjoy their lives