This its the way I tie on crackers. It's fast and easy, and it won't leave a big bulky knot when you are through.

Lay the cracker across the fall as shown	Wrap it around the fall just like you see here. If you want a tighter knot wrap it around twice. This wqill create what is called a "blood Knot" whic is very secure.
Now insert the fall through the loop of the cracker and pull the fluffy end tight.	That's it!