Ladies and Gents:
As an update to the no space heaters notice, ya'll have been conditionally cleared for electric blankets.
From the mouth of The Camp Director: "Electric blankets are fine, but please make sure they are auto-shut off and that they don’t get left on during the day."
So if your electric blanket is auto shut off and you don't actively try to start a fire by leaving it on, you're free to enjoy the warmth that it provides.