Other than flavored olive oil, what can be put into a glass bottle as a gift?
I bought one of these glass bottles as a gift for someone and would like to put something in it. Other than an olive oil concoction, what can I fill the bottle with? Ideally it would be something that could be easily removed or cleaned so the bottle can then be used for another purpose.
Or, should I leave the bottle empty?
This question is in the General Section. Responses must be helpful and on-topic.