I've recently found my old plasma ball, so decided to waste a couple of hours becoming entranced with it. I noticed that if I touched it with anything other than my hand, the streams didn't seem to be attracted to it. I did a bit of reading on it and found that it has to be something which will conduct electricity quite well, so I try a few things to no avail, and decide it's tinfoil time. This works quite well, but then I discover that if I balance it on top of the ball and hold my finger near it, I can make some tiny sparks from the foil to my finger. This amuses me for a little while, until I start to smell a rather strong burning smell coming from my finger. I'm a little reluctant to continue now. Is there any danger in doing this, or is it pretty safe?