The Crafted stone and griddle are heavy and bulky, but I wanted them to be stored in a convenient place. It took me about an hour to build a simple frame that will hold both items conveniently below my grill.
I pushed them flush, but, yes, I could have left them jutting out a bit. There's lots of room in that dimension. I also should have the grill with the opening outwards instead of inwards so it's easier to grip. It's a start. I might add some shelves for the right-side compartment. Let's see how it goes.
An update - the weight of the pizza stone and grill caused the metal bottom of the grill to be slightly depressed. Water collected there and the simple wood frame was getting soaked. Next version will have some feet on the bottom to raise it up and keep the frame dry.