Ideas for a 1 year anniversary gift?

I am 14 years old. me & my boyfriend will be dating for a year on july 23rd. We are super close, he isn't just my boyfriend but my best friend. me and him are really into retro, vintage things and we love music, we share interests in all the oldies, and enjoy movies like rocky horror and clockwork orange. I need some unique, creative ideas for an amazing anniversary gift, and day.