Create a static low-poly 3D model of a carnival for a mobile game background. It should include a Ferris wheel, carousel, bumper cars, game booths, food stands, and an entrance sign. The model must be optimized for performance, with lightweight textures (max 2K) and pre-baked lighting. No animations or interactivity. Colorful and slightly stylized. Compatible with Unity (FBX, OBJ, or GLTF/GLB). Usable for both day and night scenes.