One of the main aims of displays is to allow our visitors to view and learn about the collection. Depending on the type of object, displays may help the viewer to understand how the objects were made, how they were used, who used them and why they are significant.
The way an object is physically displayed can greatly assist in these aims. Displaying items in their correct orientation is a key to achieving this, and is simple and obvious for many types of objects. However, many objects need specific supports to allow them to be safely presented in realistic, easily viewable ways.
Think of the shape and materials from which the object is made, then aim to support the item at its most vulnerable points.
Keep these concepts in mind when thinking about displaying (and storing) these kind of items.
Examples of how to safely store and move large objects can be seen at the Smithsonian Museum Support Center site at http://www.nmnh.si.edu/anthro/conservation/bigstuff.htm
While the funds and other resources of the Smithsonian may be on a rather different scale to that of your museum, the methods used by their conservation and collection management staff to move the collection of the National Museum of Natural History may provide further helpful tips.