While waiting in Kelowna airport on a layover on my way to Calgary, my buddy Mike was waiting in Calgary airport on a layover. We connected over Facebook and started chatting. We discovered that I was going to arrive about 5 minutes after he left. I asked him if he was into hiding something in the airport for me to find when I arrived. He was in.
When I walked out of my gate, I followed his directions to a spot behind some pay phones at a particular gate and picked up a keychain he left for me.
It made me feel oddly connected to Mike over time, like in Back to the Future II when Joe Flaherty's mailman character walks up to Marty McFly in the rain with a letter written to him 70 years earlier.