Me most of mods:
Tint
Tonneau Cover
Mud Flaps
Dash Cam (front and rear)
Baja Designs fog/off road lights
Baja Designs reverse lights
Wrap
Bed Extender I
Winch
I also have a variety of other recovery gear in the bed. Max Trax, shovel, tow strap, Snatch strap, snatch block and a few shackles.
In terms of the ones I think have been the most beneficial so far, it would be the tints and Tonneau cover.
Edit: forgot to add, the bed extender folded inward to make for a dedicated cargo area at the rear where things won’t slide all the way forward has also been invaluable.