Stopping a thief

Any tips on how to stop a dog from sneaking into my room to steal handphone socks? Or better yet, how to make a dog leave the hp sock alone?

My dog loves hp socks coz he chews them up. He has demolished all but one in the flat.
Same thing happens with fluffy toys. But we keep them outta his sight.

But hp socks are a bit of a prob. Coz I usu leave them on my bedside table (which is low enuff for my dog to reach). And more unfortunately for me, I have a door of the plastic, sliding kind. It's very easy for my dog to open. So usu in the mornings, when i'm nt in my rm, he'll sneak into my room to get his paws on a hp sock.