Learn Spanish (Spain): ¿Qué traes ahí contigo? - What are you bringing there with you?

When you combine the preposition con (with) and the pronoun ti (you), they merge into the special single word contigo. This happens for "with me" (conmigo) as well, but for most other pronouns you keep them separate, like con él or con nosotros.

Why does this use traes instead of llevas?

In Spanish, traer means to bring something towards the speaker, while llevar means to take something away from the speaker to another place. Since the listener is near the speaker and has the object with them, traes is the correct choice for "bringing."

Why use ahí for "there" instead of allí?

Spanish has different words for "there" depending on the distance. Ahí means "there, close to the person I am talking to." Since the speaker is asking what you have with you, ahí is the perfect fit. Allí means "over there," further away from both the speaker and the listener.

Could I change the word order and say "¿Qué traes contigo ahí?"

Yes, Spanish word order is quite flexible. Both ¿Qué traes ahí contigo? and ¿Qué traes contigo ahí? mean the same thing and sound perfectly natural in conversation.