These are plans based on the spill plane Roy Underhill made on The Woodwright is Shop (2002 season, episode 2205). Before matches were a commonly available item people would run a scrap of wood over a spill plane to generate long, tightly curled shavings of wood (called spills). These were typically in a jar above the fireplace so that when you needed to light a candle or your pipe, you could grab a spill, light it in the fireplace and take the flame with you.
