The painted pen: with two felt-tip pens in constrasting metallic colors, it's easy to renew the look of this pen (it's round, making it easy to paint perpendicular stripes).
Thefluo and gold pen : starting with a transparent pink ballpoint pen, a ribbon of metallic gold Rainbow Tape is simply glued on in a spiral.
If you're worried that the metallic felt will fade with wear, use specific markers for wood and plastic instead.