Here is an excellent video by USNERDOC on how to make an emergency car heater. This is great to keep in your emergency car kit, especially during the winter months. So check out the video below and make one for your car kit.
List of materials:
• Clean Quart Paint Can & Lid
• Roll Toilet Tissue
• Quart Bottle Isopropyl Alcohol
• Butane Lighter
• Paint Can Opener
• Duct Tape (8 INCHES)
• Optional Clean 1 GAL Paint Can Lid