a few new challenges

allbingo is having an Amnesty round, where you can post any outstanding bingo cards you've had. They're also running a Winter Fest and the extra challenge is to make a bingo the shape of a tree.

dove_drabbles is a monthly prompt challenge community for all pairings and all fandoms! Prompts will come from the messages on the inside of the wrappers of chocolate Dove candies. Their December prompt is: Shine bright this season. Fics of all length, poetry, and art are welcome.

seasonofkink is hosting a Holiday Season of Kink, which involves choosing three kinks from the list provided and then creating a fanwork based off that. The last day to post your work is February 14, 2022.

genprompt_bingo is now accepting sign-ups for Round 21.

mixcember is a December prompt based challenge for fanfic writers, which has prompts from various themes. Find out more details here.

fancake, a community where you can rec fanworks of all kinds, has began their December theme, which is Amnesty. You can post recs based on any theme that has been previously used in the past from any year, as long as the work in question has not already been recc'd for that particular theme.