A trolley comprising a plurality of rectangular and elongated shelves comprising a plate providing a surface for carrying goods, such as potted plants and flowers, and hooks, and a plurality of posts provided with a series of openings, such as slots, receiving the hooks. The hooks extend in lateral direction and a series of openings is provided in precisely one side of the posts or in precisely two and opposite sides of the posts.

A vertical organizational system for use in the operating room during surgery to hold surgical instrumentation is provided. The system includes a vertical support including a height and angle adjustable portion; vertical support assembly, a back panel, a pivoting spine assembly, a base interface member, casters, a base, an interactive user display, a tray shelf, a receptacle container, a primary working shelf, a formed base, a custom sterile drape, an identification system, a telescoping mayo stand, telescoping step stool, a light assembly, a sterile aerosol assembly, an instrument tray attachment device, telescoping cross rail extensions and a ceiling mounted boom assembly. The cantilever shelves are detachably attachable from the cross rails and helps maintain the sterile state of the instrumentation trays even if the rest of the rack is not maintained in a sterile state.