Visual arts education in elementary schools consistently faces similar challenges, namely a lack of teaching materials coupled with pedagogical approaches that prioritize imitation over original expression. At the same time, plastic waste poses numerous environmental challenges that require innovative educational interventions. This study analyzes the creative process and collage artworks made from snack food packaging by fifth-grade students at SDN 1 Karangmalang, using these artworks as the primary medium. The study used a mixed-methods case study design; researchers collected data from 24 students through systematic observation, interviews, documentation, and artwork assessment rubrics. The results show that plastic waste as a medium effectively stimulates students' imagination and flexibility in arranging colors and shapes. The creative workflow progressed through preparation, incubation, illumination, and verification, leading to a significant quantitative improvement in originality and idea fluency. This study concludes that plastic waste is an effective, innovative, and environmentally friendly medium for art education that simultaneously fosters an attitude of environmental concern. This study contributes a pedagogical framework that bridges artistic creativity and the development of ecological character, and shows how using recycled materials can support a systematic creative mindset in elementary education.
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