Create a vector illustration of a school room. The wall should be light blue on the upper half and brown on the lower half. Hanging on the wall are some hula hoops and various children's drawings. In the room, include the following elements: A work table and a storage unit containing children's supplies such as yarn, scissors, pliers, and toys. A small ball pit on the floor. Ensure the illustration features a clean, simple vector style with smooth lines and vibrant colors typical of vector art.