Ask HN: What's the best way to connect with entrepreneurs?

I'm a young developer, and I think it would be cool to make stuff that could potentially be used for a bunch of people or make me rich or famous or something.

Really I just have trouble coming up with good business ideas to code up for fun, that could also have some value.

It'd be really cool to make a bunch of prototypes for a bunch of entrepreneurs. Any stack, language or framework - I'm up for an adventure.

Let me know your thoughts or ideas.