I finally found Sockie but not until I took a trip to the store and bought big flashlights. I looked and looked and there he was hanging from his yarn ball. He had taken up bungee jumping and there he hung, swinging in the breeze. Shame on Sockie for not filing a 'flight' plan. I could have started the search a lot earlier if I had known what part of the room to look in. I will certainly watch him a lot closer now that I know he can't be trusted to use good sense!