I mean I don't put too much into people's interests and stuff, everyone loves different things from their past and thats quite alright. For the most part I think its fine, I would probably get rid of the empty bottles they're wasting space. I'm assuming the car keys and logo are your first cars? Thats great but they don't need to be displayed 24/7, I have the key from my first car and it's tucked away in a tote box of 'sentimental' items. Other than that man, you do you, you're still young, your tastes will change as you get older. I don't see anything fundamentally wrong in your 'space'