Simple boot driers

Like many folks here I wear neoprene footwear and they get damp. In the summer its not such a big deal but damp footwear this time of year can be painful.

I'm sure I'm not the first person to figure this out but a cardboard paper towel tube placed in the shoe vertically, flush with the sole works pretty well at drying out boots/booties. After a few hours, part of the tube gets damp so you turn the tube around. Keep turning the tube every couple hours. The tube keeps the ankle open and ventilates the shoe while the cardboard absorbs water and can be dried out and reused.

They are not a replacement for heated boot driers but they work pretty good in a pinch.