Halloween // Fog machine control box?

I want to make a control box that sits in the middle of the yard. I don’t like running cables all over the yard from the garage. Something weather proof obviously, that will house my controllers, motion sensor and I’m HOPING a fog machine. It would be like a storage bin from HD. My worry is that it’ll get too hot in there and ruin the fog machine. It’s a 500W machine. I am thinking about venting it with a 120mm computer fan to try and reject some of the heat.

We are in Tennessee so you never know what the weather will be like on Halloween whether hot or cold. Just curious on what y’all think! Maybe I’m overthinking it lol. Anyways, Happy haunting!!