Check out the Piccolo a mini CNC drawing machine that can draw repeatatly what you want.
Piccolo is a pocket-sized stand-alone CNC platform. For less than $70, you can assemble your personal Arduino-compatible kit for tinkering, developing and deploying basic 3D output. Be it plotting quick graffiti, printing a one-off business card on the fly, or multiple Piccolos working together to create a large mural, this kit provides a platform for experimenting with 2D or 3D digital fabrication at a small scale. This open-source design emphasizes simplicity, and is entirely composed of digitally manufactured components and inexpensive off-the-shelf hardware.