Today value is often understood as financial value, as the material or monetary worth of something. Time is also money and time saving machines and applications are highly appreciated. Mari Keto is an urban miner and collects metals such as zamac, aluminum and copper from everyday waste. In 2019 she teamed up with solar power specialists Cedric Carles and Station-E in Paris to build solar casting equipment with a kiln for casting. Solar casting is a slow process, but the project resulted in a jewelry series that gets its value not only from its visual appearance, but also the togetherness of creating.