
YETI: Medically Necessary
The term 'medical care' means amounts paid for the diagnosis, cure, mitigation, treatment, or prevention of disease, or for the purpose of affecting any structure or function of the body.

However, you currently can't buy water bottles under Publication 502 (also known as HSA/FSA Elibility).

And as a vessel that holds life-saving, illness preventing/mitigating/treating, wouldn’t it make sense that water bottles are deemed medically necessary.
That was the pitch. It would have to take considerable lobbying efforts and meetings with local government. Still a fun project to get everyone’s head scratching.

