There’s a few devices out there that let you draw on paper and capture that into a digital format. XP-Pen just came out with one, Wacom has had a few offerings over the years, this is about one of them. These days a brand new Wacom Bamboo Spark runs about $25 on Amazon, provide you get the one with a snap fit for the iPad air 2. It does require using their pen, which is a bummer but they all seem to require using their pen, and it’s always a ballpoint. Still, pretty fun. Wacom even let’s you export the sketch as a video.