Extended bundles
General bundles of content, like activity bundles, would be ways to share material between nodes on a network. They might be zipped directories of files of various mimetypes, or collections or projects or files specific to one activity.
Facilities would be needed for creating a general bundle, sharing them, and opening them and using their contents in other activities.
Example use cases
1. Aliya wants to tag a set of 10 photographs, 2 sound recordings, and 2 text clips "Leaf Walk", and to share them with Barabbas. Barabbas receives a copy of this bundle, opens it, and tags some of the photographs as personal favorites; he also pulls the text clips and photos into an essay, and saves it as a document. He then adds photos of his own to the bundle and shares it with Aliya again (or perhaps it never stopped being shared?).