Lisa is organizing a charity event where she needs to prepare gift bags. Each gift bag contains 5 items. She plans to prepare 12 gift bags. Additionally, she wants to make sure that every participant at the event also gets a bottle of water. If she expects 48 participants, how many total items (including gift bag items and water bottles) does she need to prepare? Let's think step by step and output the final answer within \boxed{}.
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