There are several types of alternative investments, including:

1. Real estate: This includes investing in physical properties, such as residential or commercial real estate, as well as real estate investment trusts (REITs) and real estate crowdfunding platforms.

2. Private equity: This involves investing in privately held companies, typically through a private equity fund.

3. Hedge funds: These are investment funds that use various strategies to generate returns, such as long/short equity, global macro, and event-driven investing.

4. Commodities: This includes investing in physical commodities, such as gold, silver, oil, and agricultural products, as well as commodity futures and options.

5. Art and collectibles: This involves investing in art, antiques, rare coins, and other collectibles that have the potential to appreciate in value over time.

6. Cryptocurrencies: This includes investing in digital currencies, such as Bitcoin, Ethereum, and Litecoin.

7. Infrastructure: This involves investing in infrastructure projects, such as toll roads, airports, and power plants, through infrastructure funds.

8. Peer-to-peer lending: This involves investing in loans made to individuals or small businesses through online platforms.

9. Venture capital: This involves investing in early-stage companies that have the potential to grow rapidly and become successful.