Amazon.com: FLYMAX Black Acrylic Paint Pen, 6 Pack 0.7mm Acrylic Black Permanent Marker Black Paint Pen for Glass Ceramic Rock Leather Plastic Stone Metal Canvas Enamel Marker Waterproof Writing Extra Fine Point :
Art Acrylic Paint Pens, 46 Acrylic Paint Markers, Extra Fine Tip Paint Pens (0.7mm), Great for Rock Painting, Wood, Canvas, Ceramic, Fabric, Glass, Age 5+ Year, Adult - Walmart.com
POSCA PC-3M Fine Bullet Paint Marker Set (16-Colors) 087660 - The Home Depot
Fine Point Paint Pen Set: 30 Fine Tip Paint Markers | Artistro Fine Tip Markers