Just because I'm kinda evil and all, I'm going to advertise a club I made on DA. >3 (My first one, because I'm still pissed off that DA were promising a proper club / group system for *years* and have *never* delivered on it - shouldn't surprise me really.)

All ranting aside, The WeeklyPrompt club is right here.

It's not just for 'visual media' either (traditional or digital art, etc), as poetry and prose of any genre are perfectly allowable, for all those writers I know. :3