Finally I took the plunge and looked through the trash can where I had thrown some papers.
Still no luck.
I checked that trash four times, carefully.
We searched every and I was bummed, no luck.
Finally we went over to the car wash and drove thru and when we got to the vacuum searched again. Thankfully I then uncovered it! We were thrilled and said a prayer of thanks! It would have been a terrible day to lose my plastic.