The Sakura Decorese Gel Ink Pens feature bright, pastel-colored ink, and can write on light and dark paper, as well as photos, plastic, glass, and metal!
Pilot Oil-Based Twin Marker - Double-Sided - Extra Fine / Fine - Black
The Pilot Oil-Based Twin Markers write on all sorts of media, including paper, plastic, metal, and other surfaces. Crafters and scrapbookers in particular love this pen, and in the crafting community it is often referred to as the best pen for writing on washi tape!