Go for it! I have an ingrate who actually prefers cardboard to the nice plastic ones! I keep a shelf full of cereal boxes for him and just switch them out every few days. I have no clue why. I've tried different hides/sizes in case there was something bothering him but he just likes the boxes, in any size, as long as I leave the opened flaps attached. He pushes them around, lays on top of them and squishes them, then goes back inside...it's like he's all tucked in... and I only have to give him one at a time because he moves it from one end to the other. When I had two in there, he picked one and just shoved the other out of his way. His name is Fred. It suits him.
I don't get people who say snakes don't have personalities. They sure do, and they like "enrichment" if you give it to them.