When does a Slanket stop being a wearable-blanket, and start being a bed? I'd say right about now, when it's attached to an armchair. Shame it's not electric for added warmth. [Super-ette via The Design Blog]
Update: This is not an actual Slanket product, so don't go emailing Slanket in hopes of buying one. We're just using Slanket as the shorthand, because it's our favorite.