I dont know if it has already been conceived, but I wanna make an umbrella that projects heat down at you for the winter time. Call it sunbrella. Who's ever had an idea like this?
Yeah, but I live in Michigan. Sometimes coats and gloves just aren't enough. A portable heater with the convenience of an umbrella would change my life. Lol.
I wonder how you could make it light enough that it would be convenient to carry around. Nobody wants to lift up a heater everywhere they go.