I've been using a Systainer 3 for my Hitachi drill driver, impact screwdriver, charger, large combination square, blockplane, snips, end cutters and a few other stuff with an attic lid for bits.
Sort of my everyday items.
I'm just not an assassin case with everything all nested in little foam cutouts type, can't be done with all the wasted space so they a just go in the box.