I got a little frustrated that all the Gridfinity boxes would not fit on Gridfinity shelves. They were all too wide and built for extreme use. So, I designed one myself. This is a simple storage box. It is 5X5 and fits on a 5X5 shelf.  I started with the parametric gridfinity base by LayerCake model #476846. This box is strong enough to hold the screws and bolts that I store at my workbench. It will not survive the apocalypse, nor will it hold your construction tools at a jobsite.

It is designed to be narrow, so the walls are relatively thin. The lid will fit tight. You can stack these until the bottom one crumbles. 

I highly recommend using standard supports when printing as this reduces a lot of stringing. I would recommend this to anyone building any base meant to sit on another gridfinity base. There's lots of deep grooves!

These were made with standard BL PLA and a 4mm hotend. I use gyroid infill, you can choose your own favorite. 

If you like and use this please consider buying me a coffee!