OK, I'm getting bored with this, so I'll finish it off. Since I screwed my back up, I'm not supposed to sit down except when driving and when....... so it makes drawing and modifying existing pictures more difficult. The good news is that it's on the mend, so hopefully, not much longer.
As far as I know, this is an original, but if knot...............

This is a piece of cordage with a loop, such as a Bowline, tied on one end.
When the knot is tightened, the toggle will twist sideways (see picture)
This works similar to the Marlinespike Hitch, although it is
adjustable. To move the knot
closer to the anchor point, grab the toggle. turn it so it is perpendicular to the length of the cordage, and push it towards the anchor point (don't pull it out of the knot). Stop wherever you want the knot to be and apply tension with the standing part of the rope. This will twist the toggle again as in the 2nd picture. This is kind of hard to explain, so you'll have to play with it to see.
To adjust the knot
further from the anchor point, slacken off on the rope and grab the toggle (turn it perpendicular to the length of cordage)
and the loose end of the loop knot and pull
both away from the anchor point. Once again, you'll have to play with it.
I think this knot has real potential but I'm just not sure for what.
Well, that's it for now. There are a couple of others but maybe for another time. Maybe some of you have some you can share.
I hope you've had fun with them.
Doc