I made this to hold coasters measuring 10cm, but you could also toss dice in it. Print time was about 5 hours on a K1 at default speed and layer height, and 10ish hours with the settings included. This is my first uploaded model, so please be kind. Photograph is after painting with acrylics and sealing with Mod Podge matte. Coaster files are not included due to copyright issues, but they're easy enough to make in TinkerCAD - comment if you want help.