What is the fastest way to get blue charms in runescape?

Well, A cheap way to do it is just killing gargoyles.. They drop a fair amount of blue charms.. Usually more than gold. Bork has 100% drop rate of 5 charms but you can only kill 1 per day. Kbd, Mithril dragon, Aquanite and few other drop it common. If you have enough hunting lvl to catch spirit impling, it also have fair rate of loot.