I like watching people stream on Twitch...or at least, listening to people stream on Twitch. I often have trouble sleeping before a shift at work (the prospect of 24 hours in cardiosurgery intensive care unit will stress anyone out), so what I do is - put on a stream, grab a book...and fall asleep after two pages, book still in hand, the light on and noise in the background.
One of my favourite Twitch streamers has an ecclectic taste in music and some of the songs he plays get stuck in my head. Like Gucci Mane - Lemonade.
So how do you get original artwork? Put on a song, get your drawing things and just do it. Go with the flow. In this case, "Lemonade'' inspired the pop of coulour.