Life-size metal sculpture of a raven.
The raven is welded with tattoo needles that are unused but expired (they have a best before date). The foot is an old railway iron plate with a piece of flat steel. The size given in cm is approximate.
 
"Mottanai is the idea of not being wasteful, to use, reuse, and repurpose. If you put mottainai spirit into your daily life, you can try to reduce waste. It could simply be eating all the food on your plate at each meal or taking care of your home, including its furniture so that it will last longer.