One of these days, I’ll craft a post equal to one of my Dad’s plumbing jobs. Meantime, here are a few past posts that mention the improbable connection between writing and plumbing:
Annie Dillard’s The Writing Life
The Elite and the Effete: From Access to Egress
The Coming of the Toads 
The obvious connection being to flush out the blockages. How often do writers need to call Roto-Rooter? I’m saving the individual posts for later.