I was looking to dry my hiking boots after a hike or a thorough wash.

Boost Me (for free)

It dries my boots in 24h if completely soaked in water. No heating element advised (it can delaminate the insole).

It uses a standard 8025 cooling fan. I designed the clips for quick connecting the cooling fan and I've even used these to mount cooling fans in a PC case (much faster than screws). I'll upload mods for different fan sizes, but you can just resize.

The part in the photos was printed on Anycubic i3 Mega years ago. Haven't really printed this on my Bambu A1.

Room for improvements: I'm sure the need for supports could be eliminated by adding chamfers and some other design tricks.