A vegan character, and other self-imposed boundaries

I really like Pinkywinky's idea that she posted over on the forums-- she's running her character as a vegan, which means no meat (she's a mage, so she only eats her own conjures), no killing of non-hostile animals, no leather wearing (again, as a clothie, no real problem with that), and no attacking anything that doesn't attack her. Of course, that doesn't fit the strict definition of vegan, but you get the idea-- she's giving herself her own boundaries inside the game world, and challenging herself to stay within them.

We've seen players do this before (the naked troll is probably the most well-known example), and it's fascinated me every time. WoW is not really a tough game, and so there's all kinds of ways you could make it harder or set up an interesting challenge, either for roleplaying reasons or just to keep it fun. I've always wanted to try play the game without ever talking to anyone at all-- that means no quests, no training, no groups (no talking to players either), no repairs (I'd have to just wear drops as I got them), and no professions. It would be really tough-- I'd probably have to make an exception on the training thing, no matter which class I chose, but I think it would be possible, and it would definitely give a new bent to the game.

Have you ever gone without in WoW, just to see if you could?