My Girlfriends (21) bday. Celebration ideas? M(21)

She has given me the entire day of hers to me tomorrow . I’ve 6 hours to make any plans. I’m so excited and happy that she has given me the special day of hers to only me. I wanna make sure she has the best time with me. I’m here asking for ideas, I can do anything for her. I’m gonna squeeze my mind to give the bestest ideas possible. Thank you all in advance.