Model of mini drink carton. There are three suggested model variants, but you can be creative and do whatever you can. The model is made from two parts. One is the main carton, and the lid, so you can print them separately for different colours. The model is 1:6 of a standard milk carton. Thanks to a small amount of needed material, it's perfect for filament leftovers. 

Print settings:

Layer height: 0.2 mm
Infill: any, but I recommend Lightning for material-saving

For the multicolor version just use the colour change feature in P-Slicer. There is also a pre-set file in the file folder.

If the Lid doesn't fit or is too loose, just scale it a little bit in X and Y coordinates. The scale depends on your printer's accuracy. Or just glue it inside :D.