Manufacture a small recycled carboardbox, similar to a juice carton but half its size able to contain about 500ml of liquid. It would be square with a "funnel" top for easy pouring and a simple lid. These would be manufactured in a way to make them ultra affordable and easily available through supermarket chains so that everyone would be happy to add them to their monthly shopping and have a Fat Box on or near their sink. The idea being domestic homes pour their cooking fats and used oil into the Fat Box and not down the sink. When the box is full it can be disposed of through Waste Collection or burnt to generate electricity.
Idea No. 329