What to get a retiring state trooper?

My stepdad has been a cop for 30 years and in May will retire after 18 years with the state patrol. I have no idea what to get him!!! He has just about anything you could imagine. What do you get the man that has everything??? I thought about getting something made with a poem about a cop or something like that. Any good poems you know of or any other ideas? I'm all ears!