The lid of the sodastream bottle can be clipped in the clamp and thus the bottle can be stored e.g. under your desk. Works with the crystal 2.0 bottle and has plenty of tolerance for it.
Prints best with 0.2 mm layerheight and without supports. Within the two screwholes there is one 0.2 mm layer that can be penetrated with the screw itself or a small screwdriver.
Filament selection doesn't really matter. I would recommend PETG for some flexibility of the clamp, which is what I chose as well.
The author hasn't provided the model origin yet.