Okay, so maybe Day 60's model was maybe based on a Hilbert curve, not a Peano curve. So, we may as well make another model out of it. This one also keeps its form when picked up and has vertical steps to track the path of the curve.
STL file: http://www.geekhaus.com/makerhome/day61_hilbertsteps.stl
Tinkercad link: https://tinkercad.com/things/3jOnC0fn4bB-day-61-hilbert-steps
Thingiverse link: http://www.thingiverse.com/thing:172294
Settings: MakerWare low/.3mm allows the curve path to print in one continuous line, with the filament path width matching the model path width.