Amazon.com: iDrawHome A4 Pen Plotter Robot Kit, iDraw Hand XY Plotter Writing Robot Kit Based on 3D Printer Corexy or Hbot Structure - A4 Working Area : Office Products
LY Drawbot, a $70 pen plotter
iDrawHome 2.0 Pen Plotter A4 Size XY Plotter
Best Pen Plotter/Handwriting-imitating Drawing Machine/XY Plotter | iDraw