theyre are many methods but some require some skill to do. I personally prefer slayer. the higher lv you get in it the better creature drops. even cave horrors have a 1m and up drop. if you like runecrafting u should do the runecrafting minigame and if u win u get 1000 tokens to buy 1000 pure essence in members. which people have made alot of money off of. another way s killing green drags for the bones and banking them which is said to be the best method. if your f2p you should collect wine of zamorak with the telekinetic grab spell. which is the best way for f2p. in f2p i prefer to kill cockroaches for the runes and rune items. the ores help too.