When bundling up paracord or other rope, I wrap the rope around my hand (or forearm - depends on how much rope there is) a few times, and then tightly wrap the remaining rope around this bundle until it snugly encloses the whole bundle. It is secured just by passing it through itself on the last turn. I find this to be an excellent way of stowing rope because there are no loose bits hanging out that can snag and it holds it all in one tight package. It is also very easy to undo.
Given that most knots have already been invented I doubt I can take credit for this. Does anyone know if this knot has a name already?
Here it is modelled on some bootlaces: