He didn't take that picture himself. Pipe looks planted. Doesn't change that he's a know drug abuser and was almost certainly hitting that pipe before crashing.
I could see the following: Hunter went on binge in AZ, parties with hookers around the same time a massive prostitution bust is going down. Hooker steals everything worthwile in room including laptops, meth pipe and rental car keys and Hunters ID's. Car eventually is dropped at the airport with keys, pipe and Hunter's ID's.
Where the laptops went after that who knows…until they show up at the Computer Repair Store in Delaware.