212 times Sam Winchester was attached to furniture: A Retrospective
What Sam Winchester looks like tied to furniture will amaze you: You won't believe number 78
Extreme Woodworking: Making furniture Sam Winchester can't break
Where's Sammy?: 3000 chair image, Sam is tied to one of them.
Football helmets: for the guy in your life who somehow keeps getting knocked on the head.
Actors Dilemma: Jared Padalecki on how best to have your character look bored and a little fed up while tied to a chair when you as an actor are incredibly bored and a LOT fed up about being tied to a chair for a stupid scene in a really badly written episode when you know if you complain next time they will tie you to a tractor...
Season 8.18:Freaks and Geeks, Written by Adam Glass
Season 9.12: Sharp Teeth, Written by Adam Glass
(what I love about Sharp Teeth is Jared has clearly decided that being tied to a tractor is dumb (which it is) and he isn't really even playing along with the illusion that his hands are tied.)