$1:
"They are handmade, unique designs, simply priceless and not available anywhere in the world so we are really disappointed not to get them back for our major showcase of the year."
So you send one of your employees there to get them.
You make the agreement before you send them, that you know when the shoot is going to be, and when you know the shoot is done, you send someone to get your precious items, take them to the drycleaner and have it cleaned.
Not that hard, right?