This spark plug from Zemnesia seems to target a specific niche of people. If you have a shop or garage, or work on cars, you may be able to use this to store/transport valuables out of site.
Facebook
How Every Beginner Collector Can Find All The Hidden Stash Spots Already In Your House (Without Worrying About Someone Finding Them!)
Enter your best email below and I'll send you a FREE copy of my new