According to CoinMeta, Warren Buffett stated that he trusts two key assets to create wealth for his grandchildren and expects the income from these assets to grow significantly over the next few decades. He mentioned that in 1986, he purchased a 400-acre farm for $280,000 with an expected annual return of 10%. In addition, Buffett also shared a successful case of a retail property he bought in 1993, emphasizing the cash flow and appreciation potential of real estate investments.