This thread has been dormant for a while but here is a long-running thread that can be a lot of fun. It's the
Share the "burden", subby teamwork game
https://www.getdare.com/bbs/showthread.php?t=279068
There is a list of tasks posted by Doms (currently including me!) and you choose which ones you want to help complete. You do your contribution then post and add it to the count. Lots of different things to pick from - give it a try!