/diy/ - Do It Yourself

Looking to make something like pic related but with each generation of gameboy up through the 3ds. What would be a good way to secure them into the shadow box that won't leave any lasting damage? For ones like picrel they just smooth them between the glass and backing but that will be bad for buttons and won't work for my multigeneration thing. Is there some kind of tape like adhesive that would be good? I have access to a 3d printer but designing and printing different clip in brackets is a lot to do and won't look as clean.