Pet water bottle holder
thingiverse
Original design didn't stand up to being abused by kids, this one seems to fare better. Customizable thing, should work fine for any diameter pet water bottles. Included an *.stl for 60mm diameter bottle.
Download Model from thingiverse
With this file you will be able to print Pet water bottle holder with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Pet water bottle holder.