One or 2 gallon water jug that will withstand freezing

[earplug]

Typical gallon juice bottle from a store. Get one with a handle and tie it down or tie your milkcrate down.
I think mine is a old apple juice or cran-apple bottle. Tinted windows slow the growth of algae during the summer.

[kidicarus13]

Tinted windows slow the growth of algae during the summer.

Adding 6-8 drops of bleach per gallon will do the same.