PETG - Strength
0.2mm layer, 6 walls, 25% infill
Version 2 - 0.2mm layer, 6 walls, 25% infill
TPUx (Novamaker)
0.2mm layer, 2 walls, 80% infill
Hilbert
Archimedean
Octagram Spiral
Flat orientation (stronger eye hook)
Version 1 - 0.2mm layer, 6 walls, 25% infill