Comment by zefhous

Not gridfinity compatible, but I have a set of corner pieces that uses a similar concept. The majority of the material can be scrap acrylic, mdf, cardboard, etc. and you just print the corner pieces. Lids and stuff too.

https://www.printables.com/model/57813-boxkit-parts-for-maki...

3d printing is great, but a lot of wasted plastic if you print large organizers and stuff like that.