Okay, here's something that has kind of bothered me a little: we know that Jeannie can blink herself from one place to another, like from Tony's house to his office, or from one location to another, so why exactly can't she blink herself out of a drawer, a filing cabinet, or a safe? Like when they did that four-part story arc where she was locked in a safe and they couldn't get her out? It just didn't make too much sense (and frankly, it was a pretty weak arc anyway). So yeah, like, is there some sort of in-universe explanation for that?
That is how it work; for example, she was stuck in the moon safe because it was meant to seals its contents. However, when a hole was drilled into the side, Nelson tell Jeannie that she can come out in smoke-form. Unfortunately, she was knocked out and the door had to be opened.