25. Built-In Aquariums
Year of Popularity: 1970s Est. Cost: $500+*
Everyone loves looking at fish, don’t they? They’re calming and pretty, but would you opt for a built-in fish tank when potentially buying a home? The vast majority of people would say no. This trend gained traction in the ‘70s, but now it’s considered a faux pas.
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Future buyers would immediately think about the cost of taking a built-in tank out, or the added responsibility of maintaining it if they decided to keep it. Get a goldfish and keep it in a bowl instead. That way, you save thousands of dollars and can take it with you when you move.