Dice container that holds up to 8 dice, mainly because the set I recently got came with 8 and it bothered me to not keep them all together. 

Filament in the photos is BambuLab Bronze PLA Basic & Overture Marble Rock PLA

Print Settings:
Majority of the model can be printed with any settings, just make sure you print the lid threads small enough to avoid overhang issues. 0.2mm layer height seems to work fine on the threads.

Original D20 SVG file made by FontAwesome Team under CC-BY