a bubble of light

My mom and I were standing (high on a hill) Tuesday evening chatting with friends. I looked to the sky and saw a bubble of light, bright, moving, heading in our direction. We all turned and stared.

It was free floating, above our heads. A balloon came to mind so I started searching (the web) for balloons with lights. I think it was an LED light embedded in a balloon filled with helium.

Interesting, fun, and yet... do you think the individual who launched the balloon wandered the countryside later that night to pick up the balloons as they dropped back to the ground?