I got to speak to Jon Kantner! Jon is an incredibly prolific creator, and I believe has the most appearances in the CodePen Spark of any creator. Like so many other creators I've talked to Jon also shares what he knows in a variety of ways, like writing (see his personal site, or articles he wrote when I ran CSS-Tricks). We got to chat about some of his iconic Pens, his work, and some past fascinations like Tweet-sized code experiments. Follow him on Twitter here.