Making a poster is free and easy. Literal children do it in school.

I’ve made posters for events. Affinity is free now, it takes you like an hour to learn it from scratch and make your poster. If you couldn’t be bothered doing that, then that’s a signal the event itself is low effort slop. I'm not sure why people are acting like it's impossible to run an event without AI tools that literally didn't exist until right now.