MJSI's Innovation can convert any traditional toilet into a dual flush with settings for high and low and uses up to 70 percent less water. It also gets rid of the flapper, which deteriorates over time and needs replacement. It requires no tools to install, works with standard flush valves, and includes a 5 - year warranty. At $25, this product is affordable and is the one thing that everyone can do cheaply. Here is a 38 second video that shows just how easily it installs.