There are lots of marking tools available for quilters, but the one I use most is the Chaco Liner Marker by Clover. It’s sold in both regular and slim size. You are given numerous color choices: white, pink, blue, and yellow.
The Chaco liners contain loose chalk powder that is refillable. A metal chalk wheel glides across your fabric, leaving a thin chalk line.
After your stitching is complete, you simply dust the powder off with your hand or a soft cloth. I’ve never experienced any trouble removing the chalk lines nor having them stain my fabric.
I love using the Chaco liner for grid lines and other simple quilting designs. Additionally, it comes in handy for those quick diagonal lines you mark on your quilt binding tails and half-square or quarter-square triangles, making all these techniques quick and easy. The white marker is a permanent member of my catch-all sewing tray, but the other colors are always within easy reach.