The CCO Commons is the online home of Cataloging Cultural Objects: a Guide to Describing Cultural Works and Their Images and is “a data content standard for the cultural heritage community”.  They have examples for cataloging built works/structures, decorative objects/utilitarian objects, manuscripts, paintings, time-based works, photographs, prints and drawings, sculpture, graphic documentation and digital art.

Direct links:

Native American basket

Group of arrowheads

Textual manuscript 

Animation cel

Modern sculpture