I no longer use any of my tube mods, but the 30+ mods, their toppers and spare parts alone wouldn't fit in one of these "Base Crates"...
Currently I keep my Reos in three 1.5 X 4.5 X 4.5 clear square plastic boxes sitting side by side on my computer desk right in front of the flat screen monitor that are just the right size to each hold up to 8 Reo Grands/Mini 2.1's or 6 18650 or 18490 plus 2 14500 Woodvil's in two rows. They don't tip over, don't rub against each other and any of the Reos can be easily plucked from them individually for use. With a dozen of the boxes on hand there is plenty of room for more Reos. I also have right sized lined wooden "crates" for up to 6 of them to stand in on the end table next to my recliner, 4 next to the bed, 4 in the kitchen and 4 each in other rooms and one that holds 6 on my walker. All my Reo spares are in 11 X 14 divided storage cases in the hutch on my computer desk, as is all my coil building/wicking gear/supplies, racks full of extra charged batteries, spare atty's, etc. And my 30ml/60ml refill from joose bottles are in racks on the desk as well (the 12K ml plus of mixed joose and DIY supplies are stored in my refrigerator/freezer). I also have a custom desk I built out of solid maple with a solid surface top that now is a vaping desk used for doing cleaning, repairs, DIY, the UC, has all my batt chargers lined up on it and has ample storage for everything else vape related, all the tools I use for it, etc. A SS plate inlaid on a corner is D &T for a machinists vise and other tools bolted down to be used for repairs, twisting wires, etc. IOW, if anyone comes in my place and goes into any room they will know immediately that I vape. Or if they look in the fridge/freezer probably would give me a strange look since all the door shelves in both are full of joose and DIY supplies.
What I am still lacking is a carrier for my truck. The gent that custom makes my custom wood vape stands/etc had a shop fire and is still not back up and running again yet after months. So in the interim I use VapeSox to carry extra Reos in the truck, with the one in use just in a shirt pocket. When he is I will also have custom wood stands made for all the Reos with plenty of extra room for growth.