Mobile tool garage vs Mobile workshop.
Most work trailers or (vans or trucks for that matter) I have seen are nothing more than a mobile tool garage. Everything is thrown in, maybe there is a general area for a few specific tools but it is mostly just a catchall. Sure you may have all of your tools with you, finding them quickly and when you need them most however is another story. Adding up the time spent looking for what you need quickly turns into a massive inefficiency easily wasting 30+min a day. A mobile workshop on the other hand is intentional, functional, well organized. One of the best resources on this subject is Ron Paulk, who has generously shared his knowledge and innovations on Youtube.