And here I thought gardening was the lucrative skill...
You can pull in big bucks in gardening with roses. Granted, it takes a while to get them to "perfect", but once you do, each bloom is worth 80 bucks, and you get four per plant.
You can go (day by day) from one plant, to five, to nine, then twenty-nine, then fifty-five plants and the first week isn't even over. 55 x $80 every couple of days is living on easy street. Roses seem to only flower every 2 days, that's why the numbers are a bit wacky.
I suppose the disadvantage is that they only bloom in Autumn, so you only have a short window to rake in lots of cash.
Having read some of the comments above though, I should probably compost the roses and buy a digital sketchpad and an easel.