Two-button flush system
One of the most useful renovations you can do for your bathroom is the variable flushing system.
This nifty flushing modification is a very environment-friendly solution that will allow you to save water whenever you flush. The system is very useful because it allows you to use two functions whenever you flush. A button is provided that will only allow you to flush half of the water in the reservoir, which is perfect if you want to just flush liquid. The full flush is perfect for flushing solid waste. This is a great saver in water and it will also significantly cut down on your water bill.
These systems can be bought at all hardware stores and are readily available.