Try geocaching.

“A few months ago, I found myself belly-crawling through the dirt under a merry-go-round. Looking up at the underside of this playground staple, I reflected on how I willingly came to be in such a position for the first time in over thirty years. I grunted, contorting my six-foot, four-inch, 42 year-old, slightly-heavier-than-it-should-be frame to better study the merry-go-round’s support structure. As I lay prostrate, hoping I wouldn’t knock my head on something, I spied my goal–a small metal case that had once held cigarettes but now held a tiny slip of paper and a pencil. Victory! I found the Geocache.”

“I tried my first find yesterday, after half an hour of scrambling around under an abandoned stair case sweating in 35 degree heat whilst being eaten alive by ants and mosquitoes, I reluctantly gave up. It was only when I went to log it as DNF I realised no one had found it for a while now and had probably been removed. This morning I decided to try my luck again at a different location. I drove my motorbike up through the jungle roads to a beautiful view point, and after a little searching I found a string connected to a small plastic container under a small stair way. The log book was a little worn, but filled with 100’s of entry’s. The cache has been active since 2010! It was a very proud moment jotting my name and date down in the book.”