I printed some bottle dryers, but the problem was, that they all were very unstable.
Touching them the slightest would lead to the bottle falling over.
That's why I've designed a stand using a 10mm aluminium rod (with one mm wall thickness) I had laying around.
Cut the rod to a length where the bottle doesn't touch the stand.
Print the stand from ABS so you can put it into the dish washer.
The plug has been printed in TPU, so it doesn't scratch the inside of the bottle.
I got inspired by this model.
The author marked this model as their own original creation.