https://www.amazon.com/dp/B01K28YCOO/?tag=atomicindus08-20
I suppose this one's pretty application-specific, but I've found this one works great for brake jobs and other wheel-well related stuff
Another vote for the Ernst rails. I keep the sockets unlocked while in the toolbox and lock them when I need to take them out. I have a separate set of rails in a rolling plastic bin that I take to the junkyard. They get banged around along with whatever parts I throw in the bin and they haven't...