Put the cinnamon sticks and nutmegs into a food processor {or a plastic bag and use a rolling pin} and pulse a couple of times to break up into smaller pieces.  Place them in a large bowl and add remaining ingredients. 

Stir to mix ingredients well.  Now put 2-3 tbsp. of the spice mixture in each bag.  Tie the bag at the top, giving it enough head room that the liquid get in around the spices.

To make the mulled cider, add ½ gallon apple cider and 1 spice bag to your crockpot and allow it to simmer on low for a couple of hours.  {You can do this on the stove too.  It will take about 40 minutes or so, but I like the crockpot because I can throw it all in and walk away—plus the house smells awesome for way longer.}