We just slid the plastic drawers with kitchen gear that we used in our pup right into the space. They keep stuff contained, and when wedged to the left as shown, they won't spring open in transit.
I've done the same with plastic drawers. We put food in there. It's kinda like our pantry with the drawers holding all the cans and snacks and other food. The wife wants me to build more permanent shelves in there this year. It's my project for the winter.