How to get moisture out of a bottle, any suggestions?

How big a bottle? I use paper towels and a skewer to move it around or even a dish towel.

Use a blower dryer ! It will only take a few minutes and it will be dry.

I use my hair dryer on low.

I will stick a paper towel in it, and leave it there for a day or two.

Depending on the size and material I have had success heating glass bottles in the microwave on low to medium low 1-2 minutes at a time. I take it out to cool which helps the moisture evaporate. It may take a number of tries.

Depending on the material and size I would try placing it in the microwave 1-2 minutes at a time taking it out between heating in order for the moisture to evaporate before heating again.

I just set them in the sun.

Use a hair dryer.

have tried all of this except the microwave, it has a fairy scene inside and mini solar lights