Know what a Benjamin Franklin buys you nowadays? Some incredibly warm rechargeable heated insoles for your shoes and boots. That’s right. You charge up the soles and let a Li-On battery and a PCB do the rest. Really! That’s all. They’ll keep your feet toasty at 98.6 degrees Fahrenheit for up to eight hours. Work in the cold? This is exactly what you need. Too bad they don’t make a version you can shove down your pants for TGW (Total Genital Warmth).