White school chalk sharpened to a point with a hand held pencil sharpener, soap, White ceramic mechanical pencil, Roxanne's white water soluble pencil. As with any tool you must test on your specific fabric to ensure it comes out ok. also make sure any tool you use is wax free.
Edited to add I also like to use pounce pad when using stencils. I use the regular chalk refill not the kind you have to remove with heat or steam. But the regular does brush off really easy so might not stay put as long as you need it. I have never tried the pounce ultimate (the kind you have to remove with steam or heat)
Last edited by feline fanatic; 10-15-2015 at 10:42 AM.