I'm planning to build an ML-powered wallpaper app that will generate unique wallpapers and as an added advantage you can mark a wallpaper as yours and then it won't show to any other user in this app, that way you can really have
that "unique wallpaper" experience.
If you're interested or have any suggestions do let us know here https://3mar1b1wxpc.typeform.com/to/sD2Shjls