What should I get my boyfriend for our 1 year anniversary?

He's 18, I'm 16. He has a BMW coupe that's his baby. He LOVES his car, he likes to mix music and djs. He's not into sports, so I can't get him tickets for a game. So basically he's into technology & cars.I need ideas for an actual product to buy, but if there are any cute,romantic ideas to go along with what I will buy feel free to share as he does appreciate cute things. Along with what I'm buying him I'm doing a list of 100 reasons why i love him. My price limit is around 300$. & our anniversary is in June. In the past for Christmas I bought him this car video game he wanted & a car detailing & cleaning package. & for his birthday I got him a hoodie from fcuk & a shirt from parasuco. He loved them & I want him to love his 1 year gift as well! Thanks for the help! :)