For what it's worth, these pictures are straight out of my camera. No special effects, no computer graphics, no editing.

Just a single long exposure each, using a moving light source. In the first two pics, I used a child's "sparkler" tied to a tool I made for spinning it.

I'd rather not comment on how I did the third, as it's a bit more risky and I don't want to be responsble for anyone else getting hurt. My mom always used to say "Do as I say, not as I do." lol