Abstract installations are always fascinating. You can experiment with construction, materials, and form, regardless of functionality. Alternatively, you can create an experimental utilitarian pavilion that can be dismantled and used elsewhere. This summer, several installations were made, including the BucketSphere-2 from the Park of the Future festival shown in the photo. The bucket structure not only looks futuristic, but is equipped with Arduino microcontrollers that respond to movement and emit light and sound as people approach. The structure, which responds to people, attracted crowds during the festival and became a real hero on Instagram