Hand split chalk writers feel just like solid paint markers but they are easily buff-able. These are craft decor chalk writers if anyone is interested👍 : r/Graffiti
Amazon.com: Craft Decor Chalk Writer Multi Neon Colors 6 Pack - Blue, Green, Yellow, Purple, Red, White (Pens For Writing Glass Windows / Mirror / Windshield)
Craft Decor Chalk Pens for Glass Windows Chalkboards - Etsy UK
New Craft Decor, Chalk Writer Pens, Set of Five Colors, Pink, Green, Blue, White, Silver, Great For Chalkboards, Windows, Glass,Ceramic, Mirrors Or Dry Erase Boards, 7"L Pack Auction | 1BID