On this general topic, I'll mention the Milwaukee Packout system. I've been converting most of my storage containers and portable items to Packout. https://www.milwaukeetool.com/Products/Storage-Solutions/PAC... https://www.pelicanzero.com/packout-nation/
I considered standardizing on Packout, but they seem to only offer one two drawer units, all of which are deeper than I'd like (I really want a single layer of tools per drawer).
But for mobile tool transportation, it does seem like a great solution! My HVAC guy has a ton of Packout boxes in his truck.