It's often useful to snap the pivot of one object to the pivot of another. The snap options for snap target are volume, face, vertex etc but no pivot. For the object being snapped centre is available, which in object mode is taken as pivot, but it will snap only to certain objects such as empties. The only way to do this is select the target, use snap pop-up menu to snap cursor to target, select the "snappee", use snap menu again to snap it to cursor. Alternatively use the 'Align Objects' dialogue. It works but it's tedious, particularly if lots of objects need to be snapped. Surely there's a direct 'select and snap' workflow? If there is I haven't found it.