I've got a leveling kit already at the house, along with HIDs for headlights and fog lights. All interior and other exterior lights are being replaced with LEDs (some at home now, waiting for the rest to arrive). Color matching badges, custom FX4 decal on bed, possibly a pin stripe being added, tinted windows, some business graphics, and later I'll be adding new wheels/tires. That should about cover it for the exterior.
Oh, and I'm going to swap out my mirrors for tow mirrors, and probably get rid of the factory steps and go with N-Fabs.