The neat thing is that I'm in the center of each of those first two pics spinning the sparkler. You just don't see me on film because I wasn't exposed to enough light.

Yes, each picture was just one long exposure. You move the light source, in this case a sparkler, in a certain way to make the orb shape or whatever you're drawing. The exposure time on these was 30 seconds each. My sparklers lasted about 25 secs each.

I took another like the top one. I call it "firestorm". It looks like a tornado of fire. Once the sparkler died out, I triggered my flash and exposed my wife into the picture. It looks like she is trapped inside a tornado of fire

Unfortunately, I only confiscated a few boxes of sparklers from my kids last year. lol. I've used them all. I've built some LED tools to get more pictures like this, but for ones that look like they are throwing off "flames"....that will have to wait till July when I can get more sparklers. lol.