The document presents a self-customizable water bottle that allows users to attach various compartments like stationery holders, card holders, and pill compartments. The bottle prototype uses a LEGO-inspired design that enables easy attachment and detachment of the compartments. Market research was conducted among 50 students and indicated potential for commercial success. The business plan projects annual revenue of $75,000 and operating profit of $20,000 from selling 5000 bottles at $15 each. Ongoing development of new compartment types could provide sustainable competitive advantage over time.