Store flat objects in the refrigerator to save space
Especially in the summer, it depends on every inch of space in the refrigerator.
The other day I wanted to cool an occupied cake floor, which took up a lot of space, but up there was still a lot of "air".
Of course, I could not put anything on the cake bottom, so the idea of putting the cake "higher" was obvious.
From various microwaves, I have the three-legged racks kept that afford me in this case, good service. But you can also easily manage with a tin can on which to place a tray on which to store flat food while underneath space for other things is created.