Running Bowline Knot

This is a method to use a Bowline knot to cinch down on something or anchor. You can either tie a normal bowline and then pull the standing line through the loop to put around something. Or, if you don't have an end, like a tree or a pole, you can wrap the rope around the object, and then tie bowline with the standing end of the rope in the loop.

You can use this knot to bundle things as well but it will need to be secured with additional half hitches to maintain tension.