I need a small, plastic handheld furnace instead of a fan

I was thinking about an idea for an invention the other evening. When I saw an advertisement for one of the small, plastic hand held fans that people use, I started thinking about if it would ever be possible to have the same thing, but with heaters. I believe that the technology is already accessible, but it would be a challenge to make it safely compacted into something that consumers held in their hands. However, the technology is there in a way. The only problem I was having, was coming up with how to generate the heat separate from some kind of propane, gas or electric. For example, portable heating systems all have to be clogged in. There’s no way to create a portable furnace separate from electric, gas, or propane. However, could there be a way to create hand held heating systems for consumers someday soon? I constantly come up with these insane ideas in the evening. I had an idea for a cordless portable furnace last week, but it didn’t go anywhere. I recommended it to a nearby company that made portable part heaters, and while they told me that my plan was nice, there wasn’t a way to make a furnace portable separate from an electrical source. The problem with a hand held furnace have the same issues. I’d need to fill the heater with some kind of gas or propane fuel system. However, once this was done, I couldn’t exactly hold something filled with propane within my hands now could I? They have lighters that run the same way, but a lighter for a quick smoke would be different from running a tiny little furnace inside your hand!

Cooling corporation