Mining - and then I usually mine a little more. I love the idea of creating homes, structures, towns and someday a complete biome and selling perms to help pay for the materials to build more. Then I usually mine some more. I have farmed every crop but still find my way back to the mines. I spend some time fishing once in a while, making a quick fishing hole where I am watching crops grow and then it is always back to the mine again. Finally, selling donation features for others not only makes me in game money, I feel that I am able to help some players have features they would have no opportunity to use and enjoy. I think that covers it for me - but I really must get Back to the Mines
Mine, farm, Sg, Buy 1 or 2 tickets in every 50k+ lotto My method is buy a lot of tickets in a big lotto and loan away my money and my spawnshop