The other day I finally remembered where I had previously seen something like variation #7. It was on a 2CD compilation from a few years ago.

Just a little variation of #6 -- this time using a skull instead of the record. It's less funny, but looks better, don't you think?

I have seen something like this (with turntable tone arms) somewhere before, but I can't remember where, so I made this image myself.

Another one of my favorites. Simple, but very effective. Headphones as the skull, and some cables as crossbones. From a flyer for a German techno party last year.