Forget the Snuggie. That thing looks like a reject wizard robe. What you need is this awesome sleeping contraption, courtesy of our favorite purveyors of the awesome, Japan: The Japanese Snuggie Happened. The photo is pretty hilarious.
Okay, so it actually has little to do with the Snuggie. It's more like a sleeping bag with legs, which is friggin' ingenious. And convenient! Think of all the great ways you can utilize your legs while warmly tucked, snug as a bug inside a sleeping bag.
As the article points out, this will definitely come in handy if you should suddenly get attacked by a bear while camping. Though, in that case, if you think about it, arms would be pretty nice too. Because if you fall down, you're kind of screwed... (Thanks, Emily.)