If you, like me, have a fridge with wire shelves and not enough space to store bottles you can use this minimalistic bottle holder. It's inspired by the binder clip hack, but a little more stylish, not having hanging and protruding parts.
It should adapt to a range of shelf wire spacing and gauges. When not loaded it's kept in place by its own weight.
The funny shape has sprung purely from iterative design. It reminds me of an elephant silhouette, so you can call it either the Elephanstacker or the Stackerphant. Tell me which you like better :)
Modified CTC DIY Prusa i3 Pro
I got a decent draft printing it laying on one side, at 0.4mm layer height, and without supports. This way you only have overhangs on one side of the circular hole.
I drew the model in FreeCAD 0.16. The original file is included for any to easily hack it.