For this last picture, I went back to a part of the definition I'd already used,

Lacking expression; expressionless: ~ answers.com

  

 This stocking headed, fixed stare, frozen mouth 

Halloween decoration is what got me started on expressionless again.

  

The wooden Indian was the real topper with his vacant stare and stoic pose.

Of course, in a lot of ways, this part of the definition applies in both cases:

Devoid of thought or impression: a blank mind.