The way consumer Internet of Things (IoT) devices are built is leading to electronic waste (eWaste) growth. This arises from planned obsolescence, bundling of ‘smartness’ creating more routes to device failure, and lacking hardware modularity and repairability. Understanding how to best to tackle these issues requires an interdisciplinary perspective bridging design, law, and the social science research. The legal landscape is shifting, encouraging design of repairable and long-lasting IoT, and reducing routes to redundancy. This one-day workshop explores the interface between design and legal research to address the socio-technical challenges around designing sustainable consumer IoT devices. The workshop will: map out the societal, legal, and environmental implications of IoT; envision the opportunities and barriers to designing more sustainable IoT; and share best practice and tools how to move towards more sustainable IoT futures.