Change the design of the pencil cup without printing
 

A simple holder for your pencils or whatever fits in there. Simply slide in a piece of filament of the color of your choice, cut it to fit and place the seperately printed top on the cup.

See the gif on how to do it.

Print notes

Depending on the tolerances of your printer the top might be a tight fit. 

See also my Sunset box that has the same feature: 
https://makerworld.com/en/models/1587266-sunset-box#profileId-1671186