As a way to reduce heat from your face during sleep. I thought why not use a heat reduction blanket. The idea is basically inspired by a children’s knitted security blanket but much bigger. The way it works is by trapping colder air in pockets. You then use it as a pillow. Then when it gets hot you simple turn it to the side or some other part which feels colder.
I think it makes for a good product to be handmade and sold.