I need some futuristic items?!?

Im already like 200 pages into my story but I need some more futuristic items. The year is 3984 random numbers!! Anyway, they stopped making music because it sent radiation and causes cancer. Threes a machine that gives you whatever you want. Packets of like dry food when it hits air its cooks and is done.Also the world is kinda like trashy. The sky is orange everybody is in camps like concentration camps the same idea. you follow 3 characters well now 2 but so these people too ks over not aliens.Now instead of a gun i need something else. there a ray gun of darkness that kills you. Everything runs on oxygen, like cars, and hotels. Stopped making cars to haha he has a 485 italia ferrari. So I need some cool gadgets please hehe:)