Water bottle replacement for use with left over cap/spouts?

[clalso]

I've been buying the 32 ounce "Happy Home Pet Products Water Bottle For Small Animals" for my 10 pet rabbits. After about a year they break. I am left with just the caps/spouts. I cannot find where I can buy just a replacement bottle. Neither can I find anyone suggesting a some other bottle which will fit the caps/spouts. Anyone know of a replacement bottle I can buy or some other common bottle I could use as a replacement? Thanks in advance.