There's a new exchange that looks quite interesting, worldbuildingex. The description says:

For the purposes of this exchange, "worldbuilding" will be defined as any exploration of how a fictional world works beyond the information presented in canon. This includes (but is not limited to) more detailed extrapolation of information presented in canon, filling in gaps in the canon backstory, attempts to reconcile apparent contradictions in canon information, exploring the perspectives on canon events of characters implied to exist but not considered within the canon, etc.

Please note that it is absolutely fine for the gift you create to be an action-adventure story/shippy fanart/etc. (provided your recipient hasn't expressed a desire for you to avoid such things), so long as there are also worldbuilding elements present in a significant way.

I'm thinking of nominating Forever Knight, and possibly also the Sime~Gen series and Hellspark, and maybe even some Diana Wynne Jones.

If any other FK fans want to participate, nominations close on Tuesday the 24th of January at 07:59 UTC. That's 8 a.m. British time, midnight Monday in Pacific time.

More character nominations would be handy, whether you plan to participate or not. :)