Abstract: In response to a request to package item(s), embodiments determine characteristic data for the item(s), which include an indication of a volume of each item. Container(s) for packaging the item(s) is determined based at least on the volume of each item. An arrangement of the item(s) in the container(s) is determined. One or more protective structures including one or more features are configured to position the item(s) in the container(s) according to the arrangement. Relative positions are determined for a plurality of modular elements to form the one or more protective structures. Subsets of the plurality of modular elements are deposited to corresponding relative positions to form at least one of the protective structures. The item(s) are packaged in the container(s) with the one or more protective structures to position the item(s) in the container(s) in the arrangement.