I stack a systainer 2 on top of a sortainer 4. the Sys2 has all my drilling accessories (hole saw kit, 2 driver bit sets, etc) and my battery charger. My sort4 has the makita 18v drill & impact drivers in the drawer, with a small assortment of screws and anchors in the small drawers. The medium drawer holds my drill index, some spade (paddle bits) and a few other loose items. Sorry I have no pics to post, but its late.
I also have few other sortainers (a total of 10
) with various consumable items I use at work. I carry everything in, stack it up (systainer still on top) and everything is accessible. I really like this setup.