The Sims Resource has quite a few different themes for furniture, rooms, clothing, etc. and the website search tool isn't bad (although I often just use the drop down menus). You would have to check for the specific items you are looking for, but a few recent themes included CyFi (science fiction meets cyber neon lights), Steampunk, and a Retro Reboot. I did a broad search of the website and hundreds of creations popped up. Good luck with your search!
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