Amazon.com : Vaci Neon Liquid Chalk Markers - Pack of 10 Erasable Chalk Pens with Reversible Fine Tip for Chalkboard, Window, Glass, Mirror, Blackboard and More; Non-Toxic Marker Pens with Chalkboard Labels! :
8 Pack Neon Liquid Chalk Markers For Blackboards Erasable Washable | Fruugo ES
Chalk vs Liquid Chalk Markers - Comparing two types of chalks + Art Addicts Alliance Birthday! - YouTube
Amazon.com : Chalkboard Contact Paper Roll + 3 Liquid Chalk Markers 17.7” x 78.7” Chalk Board Paint Alternative Wallpaper - Adhesive Blackboard Wall Decal Vinyl - Black Chalkboard Stickers Black Kraft Paper roll : Office Products