I also think it depends don what exactly you are trying to acheive out of this. Is this something you want for personal use or something that you think should be applied industry-wide? Do you want to make a profit off of the idea?
First thing I would do is get some feedback from trusty worthy end users that would possibly look into using one of your ideas. Get it critiqued, alter it, etc. If it gets good back, I would consider getting a patent for it. However, if you cannot afford it, I would try and talk to some of your target companies briefly and see if they even except outside ideas, but do not share the idea with them right away. Give them enough to become intrigued, but that's it. The thing you don't want to do (I've seen it happen) is give them all of the details of your plan right out of the gate. They could take it, copy it, but alter it just slightly enough to the point of them being able to say "our design is different from yours" if you were to sue them.