Pretty basic ones, I got into AI images cause of that viral AI avatars thing that levelsio made 2-3 years back and have just been iterating on that idea(even though I think if I went into the AI text side of things, I'd have been much bigger at this point):

https://admakeai.com - Recently got this to 800 MRR , kinda trying to make it the main thing since the LTV on it is the highest. So if I could just figure out ads, this has the highest potential

https://aieasypic.com - First project that I made that made money from subs vs making money from ads, whole reason I continued to indiehack. Its kinda dying but core users still bring in 3-4k/mo , altho actual MRR is 1k/mo

https://bestphoto.ai - Made this after I got frustrated from the bad decisions I made on above, basically a tech rewrite + clone + simplification of aieasypic. Currently makes the most but at a lower margin than aieasypic. Not gonna say exact numbers, but lets say 5k+/mo

Also honestly if you have a thing that works, I'd say don't even share it. Its too easy to build a clone and start copying, which ofc was also possible a few years back but then it took actual effort and someone had to maintain it.

The only reason I'm sharing these is cause AI image generators are already like thousands in the market, so I mean if someone wants to go through the hell, I don't think its really that easy a market to succeed in anyways.

And here's my list of things that didn't work out: https://mesmer.tools/