Innovative Design: Transforming Tea and Coffee Waste into Functional Art









A groundbreaking project titled 'After the Last Sip' is pioneering the transformation of ordinary tea and coffee refuse into sophisticated design elements. Spearheaded by a trio of Taiwanese designers—Chao-Chun Kung, Ching-Yu Lin, and Chen-Yang Chang—with spatial conceptualization by Chih-Han Liu, this initiative redefines how we perceive and utilize waste. By collecting used tea leaves from London's bubble tea establishments and spent coffee grounds from local cafes, the team processes these organic byproducts. The residues undergo drying, grinding, and blending with PLA, followed by meticulous material evaluations to understand the impact of particle dimension, blend composition, and mixture ratios on attributes such as color, tactile quality, transparency, and structural integrity. Through the application of advanced parametric design and large-scale robotic 3D printing at Fab.Pub, these inventive composites are sculpted into distinctive furniture, illumination fixtures, and artistic sculptures. A deliberate choice was made to preserve the visible marks of their creation—the layered structures, embedded particles, and unique textures—allowing both the material's origin and the manufacturing journey to be appreciated.
The innovative spirit behind the 'After the Last Sip' project is embodied by the collaborative efforts of Chao-Chun Kung, Ching-Yu Lin, and Chen-Yang Chang. Chao-Chun Kung’s creation, 'CHA / 茶,' draws inspiration from Taiwan's rich tea-drinking customs, employing tea not only as a raw material but also as a cultural symbol and the foundation for a bespoke parametric system rooted in the Chinese character for tea. Ching-Yu Lin’s 'Undetermined Shore' utilizes coffee-ground composites to fashion textured, stratified surfaces, reminiscent of Taiwan's dynamic coastline. Meanwhile, Chen-Yang Chang’s 'Nexus Bloom' and 'Unfolding Bloom' delve into continuous parametric geometries, realized through digital design and 3D printing techniques. The exhibition not only features the completed works but also provides insight into the development process, displaying material samples and evidence of the extensive testing, challenges, and breakthroughs encountered throughout the project. This compelling display is scheduled to be held at Fab.Pub in East London from September 12th to 18th, 2026, coinciding with the London Design Festival.
This initiative not only pushes the boundaries of sustainable design but also showcases the artistic potential embedded in everyday waste. By transforming what would typically be discarded into valuable resources, the designers offer a compelling vision for a more circular economy, where material lifecycles are extended and creativity flourishes in unexpected forms. The exhibition serves as a testament to the power of design to address environmental concerns while simultaneously producing aesthetically pleasing and functional artifacts for contemporary living spaces.