The #StayHomeComicCon (https://stayhomecomiccon.nl/) is open for registrations! The first time was really nice. You can get a booth for free to advertise for your site or webshop, or pay for fancier booths and more exposure. There's #cosplay events as well.
Last time was a really nice experience! (But booths were gone pretty fast.)
A friendly home in the Fediverse for creators and lovers of comics and narrative art of all sorts.