My laundry room is in the basement and has a concrete floor. Unfortunately it gets damp from time to time. Given that I like to store stuff in there, I cannot put boxes directly onto the floor, as otherwise they soak up the moisture.

I designed little stands in OpenSCAD. I made a few of these to put under the boxes. I tend to make them narrower at the bottom than the top, but you can customise them how you like.

If you are customising, the "bottom cutouts" are the number of "feet" at the bottom. If you set this to 0 then the bottom is just flat. The "cutout diameter" changes how big the cutouts are.