Just a humble idea for a simple bookmarks. We printed them as a tiny gifts for a daughter's class or as an addition to Christmas or birthdays. 

Easy to add a text in slicer. When printing as single color, text should have 2 additional layers for easier reading. When printing 2 colors, blend it into bottom or top layer.

The model is 0.4mm height, but it is easy to scale the Z in the slicer for best result. I am printing it as 0.44mm height with 4 layers for the best firmness with 2 walls.

When printing multi color I place text on the bottom layer. It nicely blend. I recommend using concentric pattern for the text for the best filament coverage.

Printed with PLA.