One of the pieces of furniture that is currently lacking a home is the three foot wide paperback bookcase that had been in the former guest bedroom and is now blocking the closet door in the present Katie's bedroom. It turns out it can't go in the new guest bedroom because of an inconveniently placed heating vent. And since we want to build a second identical bookcase to hold the rest of the paperbacks, what we really need is a six foot wide expanse of wall that isn't being used for something else.
(I hear the sound of hysterical laughter from those who've seen our house.)
A bit of measurement later, I determined that I could take the rack for the pool cues down in the basement and free up a bit of wall just wider than six feet. So I've done that and the bookcase can go to the basement tomorrow. We still need to figure out exactly where to put the rack, but that's a solvable problem. All we need are a couple of studs. And some blank wall. :)