Semi-permanent, simple to remove, and easy to see.
I think we should talk more about Grease Pencils, a.k.a Chinese Markers. They act like usual pencils, but can wtite on plastic, metal, ceramic, and, ofc, paper! And the way they are
CARMEL MECHANICAL GREASE PENCILS - This refillable grease pencil uses a rainbow of vibrant lead colors that draw smoothly on most non-porous surfaces.
Carmel 2.8mm Mechanical Grease Pencil + 20 Refill Leads (Green), Clutch Pencil Holder with Waxy Leads, Mechanical China Marker
Dixon 12ct Phano China Markers - Blue : Target
Balzer Designs: Art Tip: China Marker/Grease Pencil
SHARPIE Peel-Off China Marker Grease Pencils, Black, Box of 12 - Yahoo Shopping
Dixon Phano Peel-Off China Markers - Various Colors - Filmtools
Art Tip: China Markers/Grease Pencils
Grease Pencils: Everything You Need to Know
Assorted Color Peel-Off China Markers Grease Pencils Set Colored Drawing Marking Crayon Pencil for Coloring Drawing Marking on the Wood Garments Metal Fabrics Porcelain Film Paper, Pack of 9 - Yahoo Shopping
Sharpie China Markers, Peel-Off, Yellow
Listo 1620 - Box of 12 - BLACK COLOR - China Markers/Grease Pencils/China Marking/Pencils/Wax Pencils - Made in USA : Writing Pencils : Office Products