Put them in Geocaches
Are you aware of Geocaching? If you aren’t aware of what Geocaching means, you need to get acquainted with it and join the world’s largest treasure hunt. In simple terms, Geocaches are hidden in nature across the world.
It is a good idea to do everything possible to keep the inner contents as dry as possible because the caches are often exposed to the elements. Here’s a pro tip, the next time you find a cache or hide it, keep a few silica gel packets inside.