You could try going to red dragon island through the Ardougne teleport and then picking up white berries, which you then take back to ardougne bank and repeat the process. The only issue with doing that is that it is in PK. Most members in that area will not attack you in fear of getting skulled and being killed by the red dragons or by you, but some may attack so be careful and don't take anything valuable. You will need a weapon such as a dagger that can slash to get through a cobweb though but that is all you will need. Here i'll show you where it is. 1) This is the teleport to the deserted keep in PK. You must pull the lever in order to get to the deserted keep. 2) Follow the red path until you reach the bottom of red dragon isle and start collecting white berries! Don't worry, the hell hounds will not chase you if you run from them, although they will attack. Also the white berries are in a safe spot from the dragons so you're safe whilst collecting the berries. 3) Head back to Ardougne and bank your berries! Then just repeat the process until you have enough to go sell in the Grand Exchange. You will nearly always find an instant buyer and you can make up to 600k an hour with this method, which requires no skills at all. the only risk is that you must enter the higher levels of PK.
