I made this for the tools I regularly need for the Saturn 2.  It's actually a remix from a model by user 'caractere' over on thingiverse (thing:5121328), but he hasn't ported his original over here yet.  I flipped things around since I use the hex's least often, so they go in the back, and made a few other tweaks.  The tray in front was originally used to catch drip from a funnel, but honestly I just use it for screws, vat thumbscrews, or small nails/pins I use to remove fine supports from miniatures.

Obviously there's a lot of empty space on this one.  I haven't experimented much, but I figure you should be able to cut back on top and bottom horizontal perimeters, and the infill can go quite low.