How to get the bottle cap out when it falls into the glass?

You can take it out with a cloth pad, which can prevent slipping.

If it is a baby bottle, it is recommended to take it out and clean it. The cleaning and disinfection of bottles should not be sloppy. If it is not done well, it will affect the baby's health. It can't just be burned. It needs to be cleaned with a special detergent for babies, then boiled, disinfected and dried. For the baby's health, cleaning and disinfection should not be sloppy.