AH, you mean a bingo :) I've seen those, where everyone gets issued a table of prompts, posts it on their journal, writes or creates it for each one, and then posts when they've finished. It would still require tracking and, depending on numbers, a ton of banners...if individualised...hmmm, could be streamlined. I will add this to the suggestion box!

(I'm collecting a lot of things, so if they don't all happen at once, don't sue me ;) It'd be nice to have some things to spread out over the year/whenever and this one could definitely work.)