I was resigned to feeling a little eccentric until I saw a C19th Paisley Shawl displayed in the excellent Toitu -Otago Settler Museum in Dunedin . The early Scottish settlers had shawls the size of bedspreads. I'm sure such a shawl would do double duty as garment and bedding. I have a couple of phone snaps through glass. I hope they are good enough to give you an idea.
There it is, folded double, with some furniture for scale.
Some detail of the pattern
I like this complex, subtly coloured design. Whether the subdued colour is original or the result of more than a century's worth of fading I am not sure.
I take away from this encouragement to turn my excessive quantity of fine, luxury yarns into very large shawls.