[chokosaki]

Building on what others have said on interests and hobbies....
If he has the internet why not have him join some english forums based on his hobbies. If he's into sports, join a sports forum. He could take part as much as he wants in his free time. Also, skype is a great way to practice english with others from anywhere in the world. Recommend that to him and maybe he could find friends through there. Just a couple suggestions!