Where is my keyring?

[IJustHadToChange]

I lost my favorite keyring exactly a week ago. I was letting the dc play with it in the car then that evening realised it was missing. Anyone want to hazard a guess as to where it is?

It is under your child’s pillow. Hidden by your child.

Thank you @Ptere but unfortunately not. I've since stripped and washed all bedding and no sign of it.