Awesome rack setup Mr. Yellow. Can you provide some details on the mounting brackets and where to source them or did you fabricate them your self?
van shelving - Google Search
Garage tool storage wall.
There are a million PVC-based holders and other storage solutions that make use of the ubiquitous plastic piping. Here are two more. To find dozens more, do an internet or Pinterest search.
slanted shelves keep items from shifting
Job Site Trailers, Show Off Your Set Ups! - Page 10 - Tools & Equipment - Contractor Talk
Idaho Sunrise (Baked Eggs & Bacon In Potato Bowls)
contractor work trailer - Recherche Google