1.An easy way i found out is the death and chaos rune trick. Go to world 1 and have at least 300 death and trade them to someone that’s saying “buying deaths” not buying deaths for 300 each, 290 each, ect. once done, he should give you like 3-4k chaos rune. Sell them afterward. this is rare though i must warn, plus , something like that may work with other things, but i haven’t tried. 

2.One way (which is a sin) but if you willing to do it, your the one in trouble. Go to varrock on world 1 and  say, giving away full wizzy (g) (or something with parts that has value.)  Go to a quiet place and give away one item for free. Then another item for a bad item. Then say (whoever trades me best item wins) and they’ll play right in trust me it happened to me and other people and he bet 2m for a wizzy robe top!

3.Another is merchanting (i did to day i worked wonders) Get at least 50k (which may be hard) and buy a ruen 2h. Sell for 55k . When you get at least 1 mil, buy full ruen (g) for 1mil then sell for 1.2m repeat until you have 4m then buy 4 full rune (g) at a time and you gain 800k at a time!

4.A way me and my friend do is trick back and relax (what we call it.) I go to falador bank  (any bank actually) and say “selling ect for ect” (like full guthix for 2m) and have your friend stand somewhere else and have him say “buiyng ect for ect” (like the full guthix for 3.2mil.) when you get the 2m tell your friend to log out and when you done trading, the other person was looking at your friend so he could make the fortune, but your friend gone away already. lol!

5.I have one more (for now) that i can share. I go into the wild and let someone kill me (you have nothing with you when you die) then go back and let another person kill you (it has to be a diffrent one trust me) then what happened for me (hopefully for you) the first guy who killed you should sk for team. Say yes and say let’s kill (the second person who killed you) ask that person for team go to level 10 wild and attack that person (the second one who attacked you.) Heshould drop his items and your friend should share with you. And there, either keep or sell his stuff.