Here are some truck accessories which you can do to customize your truck.
Add side rails.
Add running boards.
Change the tires into beefier ones (including spare tires).
Add in fender flares.
Change your rims.
Convert your headlamp and other light bars.
Add in the side rails.
Change the bed of your car.
Add in a tonneau cover.
Add brush guards.
Some customisation features include engine swapping, rearview mirror, transfer tank, chip programmer, bull bars, roof racks, air filters, license plates, disc brakes, replacement bulbs, dash kits, ball mounts, tailgate caps, performance tuners, pedal pads, auxiliary lights, led lights, bed liners, grille guards, off-road lights, bed accessories, interior lighting, bed rack ladder rack, seat cover, door handle, storage system, truck bed storage, brake pads, mud flaps, hood protectors, skid plates, door sills, mud flaps, wiper blades, ball mounts, hood vents, interior trims, wheel and tire accessories, coil springs, chrome trims, air bags, other truck external accessories, or overdrive upgrades.
Other vehicle customizations are spare tire carriers, fifth wheel (5th wheel) or spare tire, cargo carriers, air intake systems, running boards, light mounts, use of leveling kits, body lift kits, or lowering kits, transfer tanks, bike racks, snow plows, wheel hitches, suspension systems or suspension components, hitch steps, window visors, usage of jeep accessories, light covers, performance programmers, ladder racks, brake controllers, air bag modifications, suspension kit, rear view mirror, grille guards, led light bars, floor liners, balls mounts, offroad lights, bull bars, interior trims, tool box, and other safety equipment.