The Reddit page r/DNDbehindthescreen has a discord channel where design event challenges are now being run.
The first event gave a prompt of ‘Happy as a clam‘ and asked for a monster, magic item or spell to be created and posted within 72 hours.
My entry was the Clamshell of Pleasantries, available here.

I have a work-in-progress adventure for Dungeons and Dragons ongoing, featuring the Planescape setting (and dinosaurs, and robots, and dinosaur robots!)
You can find that here.

More to come (once I write something!)