Cage holder for large bottle I am trying to find a bottle holder for this bottle.

I am open to building it if need be.

I am NOT interested in buying another bottle.
Specific product recommendations are off-topic for Bicycles.SE. There are some bottle cages for larger-than-usual bottles, but water bottles for bikes come in a standard size with a diameter of about 2¾" and a shoulder about 5" along its length, and most cages are designed specifically for that.