Exchange-Traded Mortgagedove Funds (ETFs): Similar to mutual funds but traded on stock exchanges like individual stocks. ETFs typically track an index or a specific sector. Real Estate: Investment in physical properties, such as residential or commercial real estate, with the potential for rental income and property appreciation. Cryptocurrency: Digital or virtual currencies, such as Bitcoin or Ethereum, which use cryptography for security. Cryptocurrencies are known for their price volatility.