Update 09/15/18: Added updated model, quadracopiasqrupd.stl, for the square version to remove the small points at the top and bottom.
Another solid sculpture which needs to be printed in Corkscrew/Vase/Spiral (single wall) mode, no top layers, 5 bottom layers. You can also turn off vase mode and set it to print 2 (or more) side layers, zero top and 5 bottom layers.
I used PETg on my Taz6 and PLA on my Orig. Prusa i3 MK3.
There are two versions here. One has a cross pattern on the ends and the other is more square. The ones that are lit up in the photos are turned upside down and are using an LED base from my HexaFloraDeLuz design.