![LIBRARY-FOOD](http://www.andalusianstories.com/wp-content/uploads/2015/09/LIBRARY-FOOD.jpg)
One kilogram of non-perishable food if you return a book to the library after the deadline. This is the original idea which has been put into practice in the Híjar-Las Gabias Library in Granada, so users can enjoy their books longer helping people with fewer resources at the same time.