Let's see... OH RIGHT! Flours. U'll need enough pots BUT ARE REALLY TROUBlESOME I TELL U. I hate doing it this way. And they earn the exact same amount of money Cowhides earn u. Wait, cowhides earn more. But Flours sell faster. Just by 1 min though. You go to the place near Draynor Village. Please check on the map again if you do not know where it is. On the way there, there is a flour mill. Outside the flour mill, is a grain farm. Pick enough grains so that it'll fill half of your inventory. The other half of your inventory will hafta be filled with pots. Then go to the top of the flour mill and use the grain in the chute. Then pull the lever. Do it again and again until no more grain is left. Then go to the bottom floor and use the pot to pick up the flour in the flour holder. Do i again and again until your entire inventory is full with flour. Then go to Grand Exchange and sell it.
Thanks for taking your time reading this ^^