[citation][nom]IfItsYellowLetItMellow[/nom]For a couple bucks, any toilet can modified with a simple kit. I installed 2 of them. On the rubber stopper, it can be adjusted from level 1 to 9. Higher number being the standard amount of water used when it is flushed. I have all mine set to 4. This means a full toilet could be flushed several times per tankful. If its yellow, flush and release. If its brown, hold it down (to allow more water for flushing). Im pretty sure its less than ten bucks.[/citation]
THat's a great fix for now, for everyone who already has a standard toilet. And I'm sure whatever comes of this (contest?) will help the greater part of the world which still needs sanitation and does not yet have something suitable with which do dispose of human waste.