Voronoi Bottle Holder

I wanted to accomplish two things with this project: Learn how to make a voronoi patterned thing and make a bottle holder for a gym machine that lacked one. I found that the cup was pretty versatile, though, and could be used for several things, including a simple pen holder, so I've actually printed quite a few of these. The only one I haven't printed is the one that doesn't have a flat bottom so I don't know if that one can be printed successfully or not.
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This is actually a really early work that I didn't upload until now. For the curious, I used a combination of FreeCAD, Blender, and Meshlab to make this.