My preferred bolt ons:
Bull bar and rear bar
LED bar lights or twin spotties
rear cabin canopy
Long range fuel tank
Double spare wheel carrier on rear bar
Front and rear air diff locks
air compressor in engine bay
2nd and 3rd battery tray with solenoid control
roof racks
UHF radio in cabin and antenna on bullbar
extended travel shockabsorber
heavy duty coil springs
high lift jack holder on roof rack
roof rack tent
jerry can holder on spare wheel carrier
front and rear recovery points
snorkel
rear compartment drawers and cargo barrier
fridge slide
warn winch
recovery kit
6 mud terrain tyres
GPS
airbag suspension for rears