Silence of the Keys

I am not the type of person who loses things. I have a set place for everything. My keys, my coat, my purse. The other day my husband misplaced his keys. It was not like a cell phone that you could call to track down. It was not like a lost landline phone that you could locate through a sound. Keys are silent. After a while of searching, he found them inside a sneaker in the basement. He does not remember placing them there.