Sharpie markers. None of this b.s. imitator stuff. Real Sharpie markers. I have a basket devoted to storing my Sharpie collection. My favorites are the old-skool fine-point permanent marker, and the ultra fine-point permanent marker, but there are a lot of other ones that look interesting on their site. Like if I owned some of the twin-tip permanent markers - they have the fine-point on one end and the ultra fine-point on the other! Can you even imagine such bliss??
Sum it up to say, I'd never be disappointed to receive more Sharpie markers as a gift or in my stocking :)