This is just an idea. It's not tested. Take it for what it's worth. As an entrepreneur, I have a problem with having interns, and I'm not alone. I've tried to place interns in startups and it can be like pulling teeth. The problem is simple: If I'm going to have an intern, I want the experience to be both meaningful for the intern (it's their future we're talking about!) and net-productive for my company.