Even though I grew up in an urban area (Jersey City, NJ), one of my few fond memories of summer as a child was catching fireflies in a bottle. We would catch them just to watch them light up, then let them go and try to catch another.
It had been a while since I had seen a firefly (at least ten years), but just the other night when I came in from a walk, I saw about five or six of them in the front of my condo complex near the trees. It brought a smile to my face because I thought back to one of the few fond memories I had. It's amazing what can bring a smile to your face isn't it?