There are a few ways. One would be to stock up on battlestaves and air orbs and then make air battlestaves. This method is quick if you have lots of money and friends who can buy you battlestaves as there is a 100/4 hours GE cap, also a lot of money is required to stock up on them. Another method would be green dragonhide bodies. This is by far the most popular method used for training crafting, it is also a lot faster when using a stealing creation needle.