Interlocking coat hanger, it can be fixed with screws in the appropriate spaces or with double-sided tape. use my profile which is tested and the supports come off well, otherwise customize to your liking. Use at least 3 perimeter lines.
I have a bag hook in my Amazon cart and I keep bypassing it because it's a want and not a need; this took care of my want and I can take the other hook out of my basket. Works great.