As Hallow draws near, Fang and Bone have some schemes up their sleeve...

Time to Trick or Treat!
Once a day you can knock on Fang and Bone's door to claim a prize! Who knows what these two tricksters will give you?
https://painted-relics.com/advent-calendars/4

 I heard that if you visit them every day from now until the 31st they may have a special prize for you at the end.