Join a nex or continue QBD until your prayer level is 95 or prayer, 96 Herblore or tier 90 equipment is attained. Skills-Some people don’t like killing the RS gold same things repeatedly, so I thought I’d include this. Runecrafting. Go to the Runespan at level 1, keep training until the level 59 of Runecrafting. You can create two cosmic runes out of the abyss at level 59. This can be an acceleration of up to 2m/hour. At 82, it is possible to craft double astral runes. Based on GE costs, it could be better than cosmics. At 91, you can create double natures. You can also look up GE prices to determine the best price.
Herblore. Training normally, or daily warbands to a certain level. Make incomplete potion (water and a plant) and then sell them. Crafting. Shades of Morton. Restore the cheap OSRS gold temple and create sacred oil by using olive oil and the sacred flame on world 88. ~1m per hour and very AFK.