Maybe you've heard that country music superstar Carrie Underwood clips her own coupons, or that actors Kristen Bell and Dax Shepard only spent $142 on their wedding, or that some celebs and CEOs like Mark Zuckerberg still prefer to drive old, cheap cars.
Everyone loves a good deal, even the super-rich. But some, it seems, are willing to go above and beyond.
Here are some of the weirdest money-saving habits from six of the world's wealthiest people:
1. Warren Buffett still buys breakfast every morning for $3.17 or less
For the past 54 years, the CEO of Berkshire Hathaway has reportedly been enjoying the same breakfast every morning, and it never costs more than $3.17.
The third-richest man in the world has a net worth of $74 billion, according to Forbes, and yet goes to McDonald's for the most important meal of the day, where he pays for two sausage patties, or a bacon, egg and cheese, with exact change.
2. Ingvar Kamprad gets cheap haircuts and shops at the flea market
Ikea founder Ingvar Kamprad told the newspaper Sydsvenskan, "Normally, I try to get my haircut when I'm in a developing country. Last time it was in Vietnam," according to The Guardian.
That's not the Swedish billionaire's only frugal quirk. When he returned to Sweden after 40 years of tax exile in 2014, The Telegraph reported that he said on television, "If you look at me now, I don't think I'm wearing anything that wasn't bought at a flea market."
3. Michael Bloomberg wore the same two pairs of shoes for 10 years
The former mayor of New York City and tenth richest man in the world reportedly wore the same two pairs of black loafers to work for over a decade.
"You do something called resoling and re-heeling," he told the New York Post in 2010. "You don't have to throw them away and get new ones, you can just use the old ones."
4. Bill Gates wears a $10 watch
Microsoft co-founder Bill Gates apparently doesn't care much for the latest fashion, either. The world's richest person has a net worth of around $85 billion and wears a $10 watch, reports Politico.
He does splurge on occasion. He recently bought a Porsche 911.
5. David Cheriton reuses tea bags
After David Cheriton introduced Google founders Sergey Brin and Larry Page to venture capitalists at Kleiner Perkins Caufield & Byers, he was rewarded a chunk of Google stock from which he made billions.
But the Stanford computer science professor still leads a modest lifestyle. He flies commercial and wears jeans into work, according to Forbes. Cheriton even says he reuses tea bags.
6. Azim Premji keeps tabs on his employees' toilet paper usage
The chairman of Wipro Limited, one of the world's largest IT consulting firms, is worth $18.5 billion.
But the Indian tech king is still said to care about running a tight ship. He reportedly ensures his employees switch off the lights before leaving for the day and even keeps tabs on the number of toilet paper rolls they use.
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