Toilet Dam Extra 5/10

For those of us who still own standard flush toilets that use about 1.6 gallons of water each time they're flushed; Colin recommends placing plastic cups of water in the toilet tank. This decreases the amount of water needed to flush by the capacity of the container. All three of the toilets in my house have at least one toilet dam, and one has space for two. I believe wholeheartedly in using materials for their entire useful life and retrofitting those implements so they're environmentally friendly. When one of our toilets breaks, instead of repairing it, we'll install a water saving split flush toilet.
My toilet dams: