Climbed up the tower with the sunnies on, did the work then climbed down without them.
No one I was working with that day saw me take them off they just disappeared.
I didn't realise until after we left the site, but no one on the ground team heard anything drop. usually when you drop something from 30+ meters the object will collide with the tower first or various struts around the tower than hit the ground.
There was a book I read in school where our world is normal and when things disappear in our dimension they appear in a parallel dimension. In that dimension there is a team of people returning items through the dimensional tear and patching it closed. Sometimes people keep the items instead of returning them.