I suppose the irony is supposed to be that a mannequin (something meant to be looked at) appears to be looking at a person. Definitely a bit of a stretch. #6
A van marked “Mr. Fix It” has a broken window. It’s pretty [word from Richard Nixon’s vocabulary] self explanatory. #9
The catch copy for cigarettes mentions “inhal[ing] to your heart’s content.” Cigarettes are now known to cause disease of the (literal, not metaphorical) heart. Think about it as if it were a line said by a character in a story. It would actually be a perfect example of dramatic irony if the heroine said this at one point in the story and she died of tobacco-related heart disease at the end of the story. #10
An environmental activist group has cardboard cutouts acting as proverbial “tree-huggers.” Cardboard is made of trees, so supposedly these very tree-huggers are the result of the “murder” (as some activist groups might put it) of the brethren of the trees they’re currently embracing. Other commentators have pointed out that cardboard isn’t necessarily that environmentally unfriendly, but the idea is still somewhat ironic: the medium is (notionally, if not actually) directly contrary to the message. And, to LearnedHand, for good measure: #7
A sign is meant to tell you where you are. It appears as though, contrary to this purpose, there is sign simply stating that one is lost, the exact opposite of what one would expect. I’m sure in reality it is either a strange place name somewhere or the sign is in a foreign language, but the appearance, at least, is still ironic.