For easy Simoleons- Paint! by the time you've got full creativity you'll get 500 simoleons a pop! Hazel has an easel in her garden. When the Grim Reaper calls, you may have the option to hang around as a ghost for a while, do this. There are some perks which cost under 2,500 sanity points (the grim reaper calls you again at this point) constantly earn enough for these and buy them. When your bored just keep scaring people until the reaper calls. I recommend the Gold pack.