flux mini marker black Talens Ecoline Liquid Water Colour Ink And Brush-pens these are filled with water-based

these are filled with water-based paint that becomes permanent when dried

12-pack Stylefile Classic Marker in mixed colors

The colors can be easily blended with each other or water for beautiful color transitions or watercolor effects

opaque On The Run Soultip Paint

Multicolored crayon that gives you multiple colors in the same stroke when drawing

flux mini marker black Talens Ecoline Liquid Water Colour Ink And Brush-pens these are filled with water-basedSmall permanent marker in a neat little pocket size, that even has a small metal ring attached to the cap so you can put it on your keychain. The marker is filled with permanent black alcohol ink, which adheres to most surfaces. Linewidth: 2 3 mm.