Found it!

I have been looking for this old slinky spring for ages, mainly so that the grandchildren could play with it on the stairs. They have now had one of their own for Christmas (but unfortunately they live in a bungalow)!

So I decided to see what I could do with it on a mirror. I have ended up with a few versions of this, but I like this one the best.

Happy New Year to all you lovely blippers!