Hi all,
I made a blog post about creating indicator icons at the edge of the screen to point at off-screen objects, and also made some comments at the end about how easy it is to use a Viewport to create a picture-in-picture effect. This seems like the right category to post it in. Hope it’s helpful for some!
https://inputrandomness.com/figuring-out-godot-2d-screen-edge-pointers-and-bonus-picture-in-picture/