Andy M.
Certified Pretend Chef
I keep my pizza stone in the oven all the time. It sits on the floor of the oven upside down so the cooking surface stays clean. When I want to use the stone, I flip it over before lighting the oven and I'm ready to go. Some part of the pizza will occasionally spill over onto the stone and make a mess so I choose that time to put the oven through a cleaning cycle. That cleans the stone too. Just brush it off and start again.