Various modular conveyors, conveying systems, conveyor modules, and methods are disclosed. In some embodiments, the conveyor comprises a module body and an upper member. The module body can be configured to receive one or more rolling elements. In some embodiments, the rolling elements protrude through openings in the module body and the upper member. In various embodiments, the rolling elements can be configured to engage a surface below the module body and / or an item on the conveyor, thereby facilitating multi-directional travel of the item.