Retro Room aquarium
Usually, a fish tank has a small piece of plastic coral and some pebbles for decoration, so how about giving your goldfish a 70s-style makeover with the Retro Room aquarium.
It's a fairly basic tank, but with the added interest of a vintage-style chair, TV, lava lamp and rug - everything your retro-inspired goldfish will ever need. And if you don't want to stick in a real goldfish, there's even a plastic one to start you off.
Available online, you can pick one up for $20 (around £10).