I have a friend who gets by on painting pictures of dogs, he also starts imbibing alcohol by mid afternoon, which is after an 11 a.m. start. He is not famous, even within the small town where he lives and paints. He also spends longer just being friends with the clients rather than doing a lot of painting, which is invariably more 'painting by numbers' as people have photos they want 'interpreted'.

Really, this can be 'passive income'...!