Remember those pens in middle school that had all different colors of ink?  This is just like those but for fabric!

Rotate the barrel of this mechanical pencil to reveal white lead, black lead, and a tracer tip. The multiple colors allow you to mark on light or dark fabric with one tool.  The end has an eraser on it to quickly and easily remove markings when you're done. 

I keep one in my EPP bag so I can trace and fussy cut images on light and dark fabrics.