There are many fun ways you can train Magic. You can try different methods of teleporting your friends, teleporting yourself, Alching, making planks, and just other fun ways. I would say Alching, even though it will get boring, but hey, you make the money back and you can talk to your friends while your doing it. Best part about alching is that you don't need a bank right in front of you in order to cast that spell. :) good luck mate.