I am writing an editor extension (let's call it EE1) that involves the manipulation of a pattern. The pattern's data is stored in a scriptable object and represented by game objects in the scene view, however, since the data is stored as a scriptable object, I don't actually need to save any data to a scene object. The pattern is just a 2D or 3D array of cells, with some cells being active, and others inactive. Currently I just open up a new scene, load the pattern, and the user can then manipulate/change the pattern. The scene is closed once pattern editing is finished. The issue is, I have another editor extension (also which utilizes the scene view, let's call it EE2) that uses the pattern, and it would be beneficial to allow both these editor extensions to run at once, as adjusting the pattern to fit the users needs would be easier if they could have EE2 open. Otherwise, to edit the pattern using EE1, I have to close the EE2 scene. If the pattern were just two dimensional, I could build EE1 using an Editor Window, however the pattern can be three dimensional, which is why it is easier to use game objects to represent it and also make use of the rotatable camera. So, what I really need, is a sort of dummy scene view that allows me to load game objects into it, but doesn't actually utilize a scene asset. This dummy scene view would also need to be usable while an actual scene view is also open, in the same way you can open an editor window while a scene is open. Does anyone have any experience with this?