I started with a dodecahedron.
I made the 3D printed vertex to be a sleeve for all the straws to "plug" into.

Then I realize that it would be faster to print and prettier too if I insert the straw into the vertex!

I found that multiplying the object in Fusion rather than in Cura creates a more efficient packing.
I have 12 in the model then I multiplied it five times in Cura for a total of the needed 60 vertices.  I think it took 8 hours to print on the Ender 3.