One of my favorite upgrades has been the Mountain Hatch tailgate table insert. It is made of food grade cutting board material. Easy to clean, perfectly flat and level, and has cup holder cutouts. Great for ditching the fold out table and just using the one built into the truck.
Also I haven’t talked about my fridge or stove. The fridge is an Alipcool 55 from Amazon. Not the best of course but it works great. Keeps all my food and drinks cold. The stove is my favorite piece of kit that I have. It’s the Jetboil Genesis dual burner stove. I use two cast iron skillets to cook everything, and I also have the satellite burner with the boiling cup and French press for making coffee. This system is pretty much perfect for overlanders wanting a complete system that is compact yet quality.