OverlayTest.mp4
This requires MAUI Preview 11+
This repo contains some examples of MAUI IWindowOverlay implementations. While its primary use is for the VisualDiagnostics layer on Window, it can be used for much more.
I've written some examples of how you can use IWindowOverlay to create custom UI to show both in the foreground and background of your apps. Play around with it and have fun!