Everyone mentioning fireflies is making me think of the summer night we really got to know my cousin's brand-new husband. When he grabbed a plastic cup and leapt off my parents' porch, we wondered what was up - but it just turned out he was catching a couple fireflies in a cup to marvel at and then let go. At that point, we decided he was okay!
Every once in a while we have a firefly or two in our back yard here, and it always makes me smile!