The phrase "a single blanket" is correct and usable in written English.
It can be used when referring to one blanket, often in contexts discussing bedding, warmth, or covering.
Example: "On a chilly night, I wrapped myself in a single blanket while reading by the fire."
Alternatives: "one blanket" or "a lone blanket."
In no instance is a single "blanket" application applicable to all.
(All he had weresnowshoes, a single blanket, a Winchester and a small bag of supplies).
Exploring the implications of alternative assumptions is likely to lead to better policy than making a single blanket recommendation.
For covering they might have had a single blanket, or nothing besides the clothes they wore during the day.
Given postwar shortages, it wasn't easy coming to the Victory Reunion, and the University could provide only a single blanket to alumni staying in the dorms.
The two artists will each carry a single blanket as a symbol of the needs that faces 60 million refugees across the world.
That said, if you're looking for Beyonce, Kelly Rowland and Michelle Williams to morph into a single, blanket-like voice, you're in luck.
As I climb onto the plain wooden bunk for the night with just a greatcoat and single blanket for warmth, Whithorn firmly offers me his army bag for a pillow, rather than the 21st century fleece I had brought.
Layers work better than a single thick blanket or cover because you can adjust the temperature if it gets too warm by removing a layer or two rather than removing your only layer and ending up cold again.
You'll need to know the dimensions of the footstool before choosing a blanket but in most cases, a single bed blanket will be more than enough for a small stool.
Should probably clarify here: No one on this earth wants to see an OAP huddled over an electric bar fire, swaddled in every single blanket they have collected in their life.
