Another great tip from Peggi McDonald.
Removing items from shelves and walls before changing destinations is a pain.
However, if you place a small amount of window caulking putty (called strip seal or fingertip caulking - from hardware stores) on the bottom of objects, nothing moves or falls from display position between destinations.
When this putty is applied to the corners of picture frames or other wall hangings, it prevents them from swinging side-to-side.
NOTE: This putty holds more securely than sticky products specifically designed for this purpose.