I had these for the first time at elk camp last year... They're surprisingly addictive...

My wife made another batch today, and this time we took some pictures. The recipe is super easy.
More pictures can be found here:
http://www.instructables.com/id/Fire-Crackers-No-Matches-Needed/
Ingredients:
1. 1lb unsalted saltine crackers. 1lbs is a box of 4 sleeves. Take my word for it and get unsalted.
2. 1 cup canola oil
3. 1 packet powdered ranch dressing mix. 1 oz is a packet in case you have a vat of ranch dressing mix.
4. 2 tblsp crushed red pepper flakes Yes, 2 tablespoons, not a typo. This is not a dish for the weak. Add more if you dare.
5. 1/2 tsp garlic powder
Directions:
Put crackers in container with lid.
Mix ingredients, pour on crackers.
Flip container a couple times.
Try not to eat them all in one day...