This is based on gridfinity but with my own twist since I didn't like the sizes I was stuck with especially when making blank boxes with tools and such in them.

These bins were used in a small project I did with this bin holder [https://makerworld.com/en/models/1088551#profileId-1081601](https://makerworld.com/en/models/1088551#profileId-1081601)

They stack and fit a standard gridfinity grid with the exception that you get HALF SIZES!  Meaning your not stuck going from a bin thats 42x42 then upsizing to 42x84.  Now you can actually make bins on the 21 barrier and it will still fit in your old grids.

Be aware that the 0.5 bins will slide a little unless locked in with another bin in a regular gridinity grid.  The do OK though.