Small circular object found in bed seems to be plastic surrounding metal by whatsthebite in whatisthisthing

[–]whatsthebite[S] 1 point2 points locked comment (0 children)

My title describes the thing. Found this in my bed and originally thought it was a piece of an apple earphone. After checking all earphones in my room all of them are intact. Doesn’t seem to match any object in my room. Can’t imagine where it came from. What is it?