New flame game coming up, not really used Blob before and Rick wrote another great variation guide about it here. So played about a bit, and got this, which I think looks quite nice. Nothing much to the flame to get it like this either, but a fair bit of moving the transforms about on screen.
The blob variation pushes and pulls the plane to make it look like a blob. Specifically, it takes a sine wave, wraps it into a circle, and uses that to distort the plane. The pictures below show respectively a sine wave, a radial sine wave (one wrapped into a circle), and a circular dc_perlin texture before and after applying blob.