One of the vendors on an Off-Road forum I’m on came up with a pretty neat idea for oil/trans fluid bottle storage
they call it the “quart crate” pretty simple but I’ve never seen anyone come up with it before, I know I keep all kinds of fluids in the my truck and its always a mess behind my seat
These things are certainly not new, companies that make accessories for both work trucks and racing trailers have been producing stuff like this for a long time…summit even carries some of the less specialized versions. Handy if you keep stuff like that in your trunk though, even if it does slide around it isn’t going to tip easily.