Inventions from Concept to Reality

So I’m watching a special on this years CES (Consumer Electronics Show) and I had a few thoughts on other uses of some of the technology displayed. Concepts that appear simple to me, but either haven’t occurred to anyone in any of these companies, or are more difficult than I imagine. So how would I go about presenting these ideas to someone? Would I actually need to build a proof of concept model for this product? Given the nature of today’s electronics, that is a fairly daunting task. Or would something like a presentation with a few mock-ups work? Do companies have ways of submitting ideas? Or would that be like un-solicited music and record companies? This may have had a factual answer, so it could have gone in General Questions, but I thought it more likely that I would get opinions or suggestions. Thanks.

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