Protecting valuables in some sense is an art. It is a delicate dance between you and a would be burglar. There are many methods of safeguarding prize possessions, from delay to subterfuge. It is truly all about time, though. A big heavy steel safe works by delaying a would be burglar long enough to be detected and responded to.
It takes time to crack a safe. Another method, as detailed in this video, works on the same principle. It assumes that over no period of time will the would be burglar find the “safe” to crack into. If the burglar can’t find your valuables, at no time will he break into them! Check out this excellent video below by The Mans Cave: