If a fun, not so serious outdoor adventure/challenge with no expectations might clear your mind, pick a treasure that sounds enticing enough to look for. Something like a waterfall or diamonds(?) or some salamanders, maybe an artifact, or just a good time.  It could be a good way to get out and have a nice change.  You might bring pets, cameras, journals, etc.  Even if you don't want to join, I could use suggestions for the adventures. 

A group of metal detectorists in Baltimore, Maryland. We hunt for coins, jewelry, relics and what-nots. Baltimore has such a rich history hidden right in the dirt in our own back yards.  Most of our meetups will include a pot luck, picnic style lunch at the hunt location.  I'm planning meetup outings at various locations throughout Charm City (with landowner's permission, of course).