An indoor stadium packed with spectators, featuring a central volleyball court, bright overhead lights, and colorful banners. Suitable for sports events, showcasing a lively and energetic atmosphere.

A 3D model of a Security Camera, featuring a black top cover, silver high-definition lens, and metal arm, with a modern, minimalist design. It has adjustable angle and is suitable for office or home security monitoring.

A 3D model of a Haier air purifier, featuring white and gold finishes, sleek ventilation grilles, and a modern minimalist aesthetic. It has low polygon count and is suitable for home or office environments. (注：原类目"Office Appliances"不准确，核心物体为家用/办公空气净化器，更准确归类为Home Appliances)