Design a promotional booth for a streetwear brand showcasing modular laptop sleeves at a university campus. The booth should be visually engaging, with vibrant graphics, interactive displays for showcasing the sleeves' customization options, and a welcoming setup to attract university students and creative professionals. Include clear brand elements such as bold typography, sleek modular products on display, and fun giveaways like stickers or small patches. The setting is a modern university with students passing by in a lively, energetic environment. Highlight the brand's innovative, youthful, and eco-friendly ethos.