Lixit Water Bottle theratshop.com - $4.00 Product Description: Basic 16 oz water bottle with wire hook to hang off the side of the cage. RattyRat's Review: We highly recommend this style of bottle if you are going to go with plastic instead of glass. With a wire cage, it hangs conveniently on the outside, and if you have an aquarium, you can by a protective hanger for it to hang on the inside. It doesn't leak, is easy to use, easy to attach, and is easy to clean.