I'm going to build a simple tire heater of some kind for cold weather tire changes. I have a brilliant idea that uses a big cardboard box and a hairdryer-style heat gun but wanted to see if anyone has already built one and might be willing to share lessons learned. Ideally I'll dispose of the box after the work and only store the heating system. When I need to do some tire work I can always source a box from any of the many places you can find boxes. Keep it simple.