如何在静态文件夹之外使用django中的静态内容

I have a project with an app inside, and I want that app be able to be a reutilizable package, I have a template and in which I defined some CSS styles, but when I try to apply a body background image, I can't display it. I don't want to put this image in my global static folder, because this image is not for the project and it is only for this app. My project structure is the following: I have a project with an app inside, and I want