1. Real estate: Investing in real estate can provide regular income through rent payments and potential capital appreciation through property value increases.
2. Commodities: Commodities such as gold, oil, and agricultural products can provide a hedge against inflation and a way to diversify your portfolio.
3. Art and collectibles: Investing in art and collectibles can offer potential long-term appreciation and aesthetic enjoyment.
4. Peer-to-peer lending: Peer-to-peer lending platforms allow investors to lend money to individuals or small businesses and earn interest on their investment.
5. Cryptocurrencies: Cryptocurrencies such as Bitcoin and Ethereum offer potential returns through price appreciation and a way to diversify your portfolio away from traditional investments.
6. Hedge funds: Hedge funds are professionally managed investment funds that use a variety of strategies to potentially generate higher returns.
7. Private equity: Private equity investments involve buying shares in private companies that are not publicly traded.
8. Crowdfunding: Crowdfunding platforms allow investors to invest in startups and small businesses and potentially earn high returns.
9. REITs: Real estate investment trusts (REITs) are companies that own and manage income-generating real estate properties.
10. Farmland: Investing in farmland can offer potential returns through rental income and appreciation in land value.

When looking to diversify your portfolio via alternative investments, it is always important to do your research and ensure that you understand the risks and potential returns associated with each option. It is also crucial to consider the liquidity and accessibility of these investments, as they can be less liquid, or more difficult to access, than traditional investments.