Attack 4-5 spellbinders in New Haven and just walk around the town with them, just keep healing yourself. Do NOT kill them. They get you all the way to 120 if needed.
If you're working a weapon skill, you can also keep killing other stuff while you are walking around and under attack by the spellbinders. Just remember to disarm your weapon while you're looking for more stuff to kill or eventually you'll start killing off the spellbinders. And if you can't find any spellbinders, just start killing other stuff in the accelerated skill gain area and you'll soon get some to spawn. You don't have to resort to killing off spellbinders that someone else has attacking them.
(I swear most times I try to do a stroll outside Haven with a couple of spellbinders on me while I'm attacking and killing other stuff, some "helpful" person inevitably comes along and kills the spellbinders. Even if you ask them not to and do stuff like run in circles and other things to make it apparent you're definitely sitting at your keyboard, they act like they're doing you a favor and "saving" you.)