There are several synonyms for the phrase "it's no bother" that can be used to convey the same meaning. One option is "don't worry about it," which is commonly used to reassure someone that they need not be concerned about a particular task or request. Another alternative is "it's no trouble," which suggests that the speaker is happy to assist and does not find the situation burdensome. "No problem" is another common phrase that can be used to convey the same idea, indicating that the speaker is willing and able to help without difficulty or inconvenience. Overall, there are many ways to express the sentiment that something is not a bother, allowing for fluid and versatile conversation.