I had a single-sided wooden drawer, which was very useful, but I recently changed it out because we are heading out on a multi-week trip and we have different needs now. This will allow my wife and I to sleep in the GFC and the 10-year-old and dog to sleep on the bottom platform.
Because of time constraints, I opted to just purchase the ply from BamBeds, and got 4’ slide drawers from Zoro.com. It’s in a short-bed tacoma, so I built a separator in the back for tool storage.
It can all come out of the truck in about 1 minute.
I got a couple questions about the bins I ordered specifically. I noodled around the zoro.com site and found ones that would work, relatively well. There is still about 6" of side to side play, but I store other stuff aound them. This is a “perfect is the enemy of good solution” so take my recommendation with a grain of salt.