Abstract: According to various aspects, exemplary embodiments are provided of thread storage assemblies, systems, and/or cabinets. In an exemplary embodiment, a thread storage assembly generally includes multiple vertical shelves that are arranged in parallel with each other. The vertical shelves may be pull-out shelves configured to slide forward and backward. Each vertical shelf may include multiple horizontal shelves or racks that include multiple removable spindles and/or that are rotatable between a horizontal position and a tilted position.