Abstract: Modular crate components and systems can include panels, connectors, and fasteners useable to create crates of different sizes. The panels can include a plurality of teeth along each of the edges of the panel that can interlock or intermesh with a plurality of teeth of an adjacent panel. At least some of the teeth can include posts that are configured to engage with the connectors to facilitate coupling the panels together. The connectors can include an arrangement of slots that are positioned and configured to engage with the posts included on at least some of the teeth. Each connector can also be configured with an opening configured to receive a fastener therethrough.