Special question about collision thingy

Hello,

I want to make a gameplay feature where player can control certain shaped device which can be freely moved using mouse control. Now when this shape overlaps solid structures a special hole is created inside this solid structure where items can be inserted etc.

Player can also move this hole making objects dynamically and items caught up in this process are also affected. for example you can create hole in base of wall, put item there then move hole up and item also travels up. (hole exists only where this shape is placed). Sort of like the game Closure, where the light areas have collision and darkness does not.

Is this possible to accomplish in unity? I know you can't dynamically boolean collision mesh by default but is there any alternative or method by which feature like this can be accomplished?

Thanks in advance!