Since I made this myself, the above image is definitely a skull and crossbones variation.

I'm not sure if this was intended as a skull and crossbones variation, but it might very well be.

This is being used by a hairdresser in Munich. Seen on German TV yesterday.
(Before I saw this, I was going to make a different image involving scissors as well, I'll probably do that in the near future.)

The local butcher seems to have a sense of humor. I've taken the photo myself this morning.