I’ve used it for poster design for dance nights. It cuts way back on my design time by getting an idea 75% there and I still have a majority of the creative influence on what the final product is.

My latest was for a night called “Electric Jellyfish” and this was my 5th poster for it. Instead of spending a lot of time finding jellyfish images and photoshopping the bejesus out of them I was able to get a solid output from midjourney and then photoshop the bejesus out of it.

Edit: pho shopping / photoshopping. Although I am in Seattle and I do go pho shopping on occasion.