Cupholder designed in Tinkercad to attach to frame of IKEA Kura bed.
Hex design comes out nicely, but I did fail once without supports, so the pictured print was done with supports everywhere on the hex design.
This is one of my first designs, and it's far from perfect. The section that attaches to the bed could be a little more snug. The connector between the two pieces could be a little more refined. But it's held up for several months of daily usage, so I'm happy enough with it.
The author hasn't provided the model origin yet.