Finally finished the build on my shelf for the back of my bride's 2012 SR5 with 3rd row seats. The end goal was to add some organization that was really modular, working for both daily driving and running around town as well as taking it camping. Eventually we want to do the short term expedition thing, 3-4 days with a week trip here and there. I wanted something that would allow my cooler to fit under so i could slide it out without unpacking all my camping crap from on top of it. It ended up looking way better than I originally expected. I used some scrap 3/4" plywood i had laying around, and a couple of aluminum turnbuckles. All the joints were done with glue and deck screws. The uprights have 3" galvanized right angle brackets for stability. Finally the entire thing was coated with 2 cans of Rustoleum Spray on Bed Liner.
Also dropped in the Toyota cargo area mat, finishing off the rear to look super clean. I made it so that both of our coolers will fit long ways side to side, or one cooler and two milk crates (used as a makeshift drawer system).
I welcome any critiques or suggestions. At this point i'm calling it version 1.6...it's grown since the first assembly.