I wouldn't say I enjoy cleaning them but it but this last time I had my 14 year old son help clean three shotguns since he was shooting. And basically taught him how to disassemble, clean, inspect, lubricate, reassemble and function check each one. He was dying to get back to his video games though. This was the second time he has gone skeet shooting but he still seems to prefer video games to shooting.
Have you ever taken him to an Apple Seed shoot? The Apple Seed shoots teach history during shooting and gives meaning to what owning guns is all about. The boys and girls I have shot with really seem to get a lot out of it.