I have 2 of them, both Dewalt.
One is a smaller unit, the other the big "bazooka" as I call it. They refer to them as jobsite blowers.
My small one
here:My "bazooka"
here:I use the small one for blowing off the top of the slide before pulling it in, and to clear the under the awning area of leaves and debris. It works awesome!
You can buy these as tool only, and if you already have a brand of cordless tools, get one of the same brand. I bought Dewalt because I already have a fleet of their tools and I can use the same batteries.
My big bazooka works really well to clear powder snow. A very fast and easy way to clear sidewalks.
I use my small one on campfires too, like Valhalla said. Works great!!