Yeah that "spot cooling in a pinch" is key. I've used a USB fan to blow air right across a hot router before, just propped it up on some books. You gotta aim it so the air actually moves over the hot parts, not just near them. Makes a huge difference.

What if you're just opening the jar too much?

The sticky juice on the ceiling fan is a new level of commitment. At least with my cabbage swamp, the smell just soaked into the walls. I had to throw out the pot, it was a lost cause.