A fabric with two straight cuts to put your legs in easily and holes to fit the fabric around the legs.
I don’t get it
Same
I will try - Heater goes under the desk. Blanket goes round the desk creating a small warm space. Legs go through holes in the blanket so they are kept warm without heating the whole room.
And then you burn to death!
Could happen. Pictured is an oil filled radiator style where the heating elements aren’t exposed. Probably the safest but the manual probably says not to do what the OP has pictured.
An electric blanket is probably still hundreds of times more efficient.
You’re probably right. They make warming pads for pets with the same tech from electric blankets that would be the perfect size if just your feet get cold too.
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Pretty sure keeping your head and chest warm is actually more important than your legs, since those places are where the important parts are.