One day while you were walking through the neighborhood you noticed a neon hair band on the ground and decided picking it up.

You didn't think much of it, someone probably had dropped it and didn't notice or come back to look for it.

Little did you know it was placed there purposely and that you were being watched when you took it.

The explanation was simple, whoever had placed it there was gonna know who their victim is when they saw you with it.

A possible stalker?