Every day, Zaff located in Varrock sells players at a bargain battlestaves. Their number will increase with Varrock Diary quest progression, making for an interesting and massive effective gold per hour rate. It's almost as if you could print money, so please take advantage of it.
When you've completed Gertrude's Cat quest and completing the quest, she is Gertrude will gift you adorable kittens. No questions asked, no fees included. Each kitten takes 3 hours to mature. After that, it's ready to be exchanged to Gertrude for 100 Death Runes or 200 after having completed Ardougne Diary (easy) It may seem strange, but it's not. You can stock mature cats in bank and then turn them all in simultaneously for convenience.
Level of Cooking Skill to 29. When you've mastered cooking up, purchase two boxes from "the items" (reward of the Trouble Brewing minigame), four buckets of water four bushels barley malt two ale yeast kettles, eight pinches of harrarlander , and sixteen beer glasses. head to the upstairs of Laughing Miner Pub where brewery is located.
Fill the vats (be mindful of order It's vital) water, barley, "the stuff", Harrarlander, yeast, and then let it sit for between eight and two full days to ferment. You've got two batches, ready to sell on Grand Exchange!