"Put a bug in ear" is an idiom that means to suggest an idea or plan to someone. It is commonly used in business and sales contexts. There are several synonyms for this idiom that can be used to add variety to your language, such as "plant a seed," "drop a hint," "plant an idea," "make a suggestion," "offer a thought," "influence," or "advise." Using different synonyms can help you communicate more effectively and express your ideas in a more creative and nuanced way. It's important to choose the right synonym that fits the context and tone of the conversation to avoid confusion or misunderstandings.