Tool box [stackable]

I already had a few of these boxes but they never really stacked well. I decided to add some nubs and notches to avoid having them slip off of one another just by looking at them.

I also created two separate versions for the lid. The one with the integrated nubs needs supports and therefore takes forever to print (approximately 7h with tree supports only in the areas needed). 
The other lid option has notches like the bottom does and therefore also prints without support. All you need to do is print 4 of the little nubs and glue them in place.

I added notches to the box that will fit in the nubs on the lid making it possible to stack several boxes of the same size.