Here in seismic Southern California - both in storage and on display - objects must be secured in such a way that the hardware is held "captive".

One of the most common solutions is the use of "pear clips" which are just a variation of a carabineer. They come in different sizes which is handy. For larger pieces it can be easier to attach to a screen if more than one is used. They can be clipped together as needed.

on screen.jpg
Secured on the screen...

pear clip on wall.jpg
...and the wall.