Matt over at Expedition Portal wrote a nice post the other day about some nice finishing details that you can add to your truck. He covers Factor 55 recovery points, VHT wrinkle paint for classic looking interior surfaces, the Powertank portable air tank, and Rugged Ridge Front seats.
I can personally vouch for the Powertank, as I have one on my own truck. It inflates tires fast. The only down side is having to periodically take the tank to have it refilled with CO2 at your local welding gas supplier. Having up to 200 psi on tap though is pretty cool.