The phrase "have your hands full" is often used to describe a situation where someone is very busy or overwhelmed. However, there are many synonyms that can be used to convey a similar meaning. For example, you can say someone is "swamped," "inundated," "overloaded," or "snowed under." Another option is to say someone is "juggling multiple tasks," "dealing with a lot," or "trying to keep up with everything." No matter which synonym you choose, it's important to remember that this phrase is often used to express empathy or sympathy towards someone who is dealing with a difficult situation.