I used to dry my shoes in the oven which was set to a very low heat. This is now history! I can't remember who taught me a better way to do it, but must be a church sister! My fridge is now 28 years old. Yes, 28! And it is still running fine. It has an external heating/cooling grill. As the compressor is switched on (for cooling), heat is generated. So, all I need to do is to hang all the shoes on the grill. Overnight, the shoes are all dry! Perfect! Unfortunately, most new fridge has concealed cooling grill. So this method may not work. Do you have a better idea/way to share?