If you're stuck on how to design a map, give Bing image creator a try. I was pleasantly surprised with some results I got
I'm not a DM and I've never played DND so maybe this sucks but I thought I'd pass it on because I like browsing this community.
I was messing around with Bing Image Creator and thought I'd see what kind of map I could make. I think my immature prompt here was "The Ball Zone: Dungeons and Dragons battle map of a ball factory. Balls are used as obstacles throughout the map"
I'm not sure if I'd use anything Bing makes as-is but it might be cool for inspiration at least
I don't know what makes a DND map good or bad but I got some pretty cool-looking ones. Sometimes it would interpret my prompt weird and give me something cool I didn't expect at all, like this:
So I've been playing around with this some more, and this might genuinely be one of the best usage of AI image generation for ttrpg games I've come across. Previously I was using it to generate character portraits and splash screen backgrounds, but this looks like it's going to be a big practical help when it comes to planning fights etc. I'd never even considered using if for this so thanks, seriously. I can already see the possibilities for making my life easier, lol.
I have a LOT of reservations about using these generative models but if you're using it as a source of inspiration, to me it's the same as looking at thousands of maps....just wayyy faster.