Original Hex Coaster from here: [https://www.printables.com/model/30743-coaster-stackable](https://www.printables.com/model/30743-coaster-stackable). I have printed many of the hex coasters before there was a stackable version. Instead of leaving them all around my table, I figured I would make a similar looking holder that has the same style hex bottom but just slightly larger to fit the coasters in. 

Square coasters that are 100mm x 100mm will also fit.