<![CDATA[Organic waste dominates household waste streams in Indonesia, yet most households lack a practical, space-efficient way to process it. This study aimed to design and construct a portable maggot house for organic-waste management at household and small-business (UMKM) scale. A Research and Development design was applied using the five Design Thinking stages: empathize, define, ideate, prototype, and test. User needs were collected through interviews with ten households and UMKM in Bangkinang Kota and analyzed using descriptive qualitative analysis. Nine of the ten respondents discarded organic waste without processing; odour, flies, limited space, and lack of know-how were the main obstacles, and all ten preferred a portable device. The resulting prototype has a welded hollow-steel frame (39 × 55 cm footprint, 75 cm frame height, 15 cm legs), stacked biopond trays with an inclined side and perforated pipe for self-harvesting of prepupae, an egg-laying chamber, and a sloped roof. In a preliminary test on moist rice bran and household organic waste, the prototype supported the development of Black Soldier Fly (BSF) larvae over a cycle of about 16 days, without a strong putrid odour. The design offers a practical basis for decentralized organic-waste processing; quantitative performance testing remains for future work.]]>
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