This paper takes up a topic regarding the lack of processing of rice straw waste in Indonesia. Since the number of rice production in Indonesia is huge, it can't be separated with the production of its waste and that becomes our main problem. These days, some people had been processed rice straw waste into livestock feed and organic fertilizer, but that isn't enough, there is still a lot of waste left and useless. Farmers get rid of the rest of the waste by burning it, yup, it's also another problem. In this paper, we, as architecture and interior architecture students, giving our alternative idea for utilizing rice straw waste as something that is more sustainable and useful in our daily life. Rice straw waste can be processed into biodegradable plastic which becomes main material of our modular furniture. This furniture are produced in module form which can be assembled into more than 10 possibilities of different furnitures and different functions. User can also easily reassemble it if they think it isn't