Says "Hot" on one side and "Cold" on the other.
-- FlyingToaster, Feb 06 2014

You would have to fold the top of the blanket back, to avoid the cold shoulder.
-- erenjay, Feb 07 2014


Hmm, I don't actually see that as a problem unless the shoulder is the only point of contact.
-- FlyingToaster, Feb 08 2014


upside and downside.
-- FlyingToaster, Feb 08 2014


The deluxe model has a chest for heating or cooling your drinks.
-- popbottle, Feb 08 2014


I'm awed beyond the ability of one + vote to express with how simple and cool (no pun intended) this idea is!

So would the blanket just something like a sort of brigantine of chunky Peltier modules with lots or wires running to them, sandwiched in crinkly Mylar, or to somehow make the whole thing flexible and homogenous?

A side application would be that, removing the power supply, you could use one rolled into a sleeping bag as a generator to charge your small electronics using your body heat – quite the boon for outdoors folk with a need for ever present radio and IT connectedness.
-- CraigD, Feb 08 2014


There doesn't seem to be a soft, furry material for Peltiers, so I'd go with a large number of extremely small disks, say 1cm area - sequins really - covered with a fabric just thick enough to keep the little disks from being noticeable.
-- FlyingToaster, Feb 11 2014



random, halfbakery