As a dice collector, I loved finding this on Thingiverse:
https://www.thingiverse.com/thing:58408
It's wonderfully customizable, allegedly allowing anyone to tweak it to design any sided-die they wish!
Only problem is, the model is solid, and as I discovered when I uploaded my model to Shapeways, it'd cost over $30 in alumide.
Can anyone hollow it out? I assume this would be a simple process? I wouldn't even know where to begin.
Anyway, here's my D37 (37-sided die) model:
https://www.thingiverse.com/thing:83281
And here's a rendering of it:
I'd love a hollowed STL file of my file. (After that, I'd be more than happy to upload it to my "store" with no price markup, since I can't take credit for creating the base model).
37 seemed like a wonderful random prime number to test it out... I'm curious to discover how it rolls!