I love cleaning up other people's places. Not that I'm a maid or whatever, I just enjoy seeing the delineation between what other people call "messy" versus my definition. There's some sort of mental "weight" that people associate with "their" messes and "their" organization which I find enjoyable since I can approach an objective, objectively. It's like hearing someone say they have no money, and yet they're still able to afford an iPhone or a plasma screen television. Weird, I know.
I guess cleaning isn't really all that menial, so perhaps driving would be a better answer. I mean driving, as in 6 hours or more at a time. I get to do it every once in a while, and I love it because I blast music in my car the entire way. And almost all of my music has women as lead singers, so I'm the modern day equivalent of a sailor from Greek mythology, all full of ideas like "Yeah man, we should TOTALLY head for those rocks!"