Well, if you're going for a gentle tease, or want to mess around with the lee's anticipation, there's stroking, usually with just a few fingers, or even one, leaving room to add more whenever the lee starts to adapt. You just glide your finger across the surface of her skin, throwing in the occasional wiggle for a jump in laughter.
Spidering is more fitting as a coup de grace, when you want the lee to instantly succumb to her laughter without getting to fight back.
Then there's poking or finger jabbing. Ram your fingers into her sides and shake them if you're going for a sudden shock tickle.
Then there's the wiggle. If you know a spot the lee cannot stand, you go over to that spot and just wiggle your finger back and forth, flicking across that area over and over on that one tiny spot.