Irregular structure inside a box

Hello world,

I just start using grasshopper and I have this idea of creating this irregular structure inside a box (see jpg), but at the same time the structure holds these rectangular paths. So I was planing on extracting the points from each surface of the box and then connect those into the profile edge of the rectangular paths by using the random component. I'm still working on it but do you guys suggest a better idea?

I attached my rhino and definition file just in case

Thank you