Create a rule:  Workshops

Each commoner owns a workshop in which to store their parts, inventions and resources.  The workshop is also the only location in which inventing is possible.  All resources and parts are considered to be inside the workshop at all times rather than being carried by the inventor.
A commoner will be located within their workshop by default, unless another rule states otherwise.

Add to rule 2.1:

The act of scavenging takes 24 hours from the moment it is announced on the GNDT.  During this time the commoner will be located at the Junkyard.  For the sake of simplicity, resources shall be added the moment scavenging is started.