How much do I need to start DeFi?

I'm curious, how much money do I actually need to get started in the world of DeFi, or decentralized finance? Is there a specific minimum amount that's recommended, or can I dive in with just a few dollars? I'm excited about the potential of DeFi, but I want to make sure I'm approaching it in a financially responsible way. Any advice or insights you can share would be greatly appreciated!