A quick thing I made in Tinkercad for the contest. The walls are 2mm thick. If it weren't for the bottom, this could've possibly been done in vase mode, but unless you know how to make the G-code only do part of it in vase mode, the last 58mm, it's a 13+hr print (According to Voxelmaker.) And that's with 2mm layers and 10% infill with 3d infill. Could be less if I stuck with hexagon.
The author hasn't provided the model origin yet.