When they teach you about startups and raising funds, they call the very first source of cash the triple-Fs: Friends, Family and Fools. I think that pretty much sums up your pool of extra heads as well.
A lot of us have ideas. I have a new idea on just about weekly basis, but I'm definitely not quitting my day job. Ideas are cheap, implementing them is where real capital is needed.
What's also working against you is that you want to work on non-open source. If you find someone who is not your friend or family (forget the other category, you don't want them anyway), how is that person going to trust you? What will keep you (or them) from running off with the code. So now, if you are serious, you need to start drawing up contracts, equity agreements, draft a business plan. Most ideas in their infancy are just not worth it.
My advice would be to either
join an existing open source project and make new friends. Only then approach them with your ideas.
Start open source project yourself, make it useful and release version 1.0. If people like it, they will use your project and whatever is missing, they just might help you improve it. Establish lasting relationships with those that want to work with you.
If you notice either approach is open source. That's how you get your name and reputation out there. However, I've seen open source projects where author would write the framework and allowed people to copy code and write plugin components, but didn't allow people to contribute fixes to core framework in main trunk that he maintained. His reason was that he wanted to keep his options open if in the future he wanted to close the source for future version of that product. With other people's code in the framework, I would be much harder to go closed-source.