Big Money Making Methods

I have never been rich, though at times I have had decent amounts of money (30Mish) sitting in the bank which I was very pleased with. Now I usually spend it on skills, since I am higher leveled I am having to spend more but I dont bring in much more than I used too which is a problem, haha.
My original money making method was barrows, this was around 3 years ago. I did it for 2 weeks straight making around 13M (with a Verac and Dharok Helmet) though I could only get 3-4 chest loots per trip back then. This was huge for me at the time, tripling my wealth. Other ways I get money are slayer, woodcutting and fishing. For woodcutting I have finally switched to Ivy because at 90+ other methods are too slow. Fishing I have got 14M xp in, so I dont do it much anymore. Slayer drops are worth next to nothing anymore, so I am struggling for money these days. At least now mining will make me money and I have my loyal kingdom. I may have to start boss hunting in the near future to raise stats like Prayer or Herblore.
Intresting topic though, I liked it. Never used any of those methods, except for a few times of the 76K tricks, but I never really got into it since my drops were always really unlucky.