This famous blue and white multi-colored pen from the 90s is now available in other colors. : r/mildlyinteresting

Red and green pens are 1 cents more expensive than blue and black pens : r/ mildlyinteresting

6 COLORS IN 1: Each Shuttle Art multicolor ballpoint pen comes with 6 vivid colors: black, blue, red, orange, green, purple. Just with a gentle press

Shuttle Art Multicolor Pens, 23 Pack 6-in-1 0.7mm Retractable Ballpoint Pens for Office School Supplies Students Children Gift

Two color pens

The little swatch book. I (did) use fountain pen companion to catalogue my pens and ink, but this is so much easier and more fun : r/fountainpens

Milky Gel Pens : r/nostalgia

Each multicolor ballpoint pen comes with 6 vivid colors: black, blue, red, orange, green, purple. Just with a gentle press and you can switch to any color you like immediately, ideal for marking, note-taking and decorating in different colors. 0.7mm fine point always delivers smooth glides, giving you a satisfied writing experience.

Shuttle Art Multicolor Pens, 23 Pack 6-in-1 0.7mm Retractable Ballpoint Pens for Office School Supplies Students Children Gift

Shuttle Art Multicolor Pens, 23 Pack 6-in-1 0.7mm Retractable Ballpoint Pens for Office School Supplies Students Children Gift : Office Products

I managed to use all the ink in my pen without losing it. : r/ mildlyinteresting

Ten Color Pen EverythingBranded USA

Multi-Color Ballpoint Retractable Pen Blk Ink Vintage 90s Made In Germany

Rhode Island Novelty 6.25 Inch Color Shuttle Pen, One Pen : Ballpoint Pens : Office Products