From my fiction writing I've made $90, from the sale of a short story (novelet).
I was once asked to edit (not copy edit, but editing for flow and style) the opening chapters of a novel, for which I was paid $50. I'd contracted informally for $40, so that was a nice surprise.
I was once commissioned to calligraph and paint a page of parchment in manuscript style, an anniversary gift for which I was paid $700 (materials included).
So, for my second career, which should I pick? Not that I'm quitting my day job, which I rather enjoy. I'd say painting, but I may have exhausted the market for pastiches of East Anglian illumination.