I've come up with a few product ideas. I think these are awesome ideas, and hopefully someone has already come up with them. I doubt I'm the first one to think of these, but if I am, let's hope I get credit. ;-)
1. I want an MP3 Server in my car. Similar to the iPod, in the sense that I can sync from a PC or a Mac while my car sits within 50 feet of my house. How slick would that be to pick your playlist for your roadtrip while you're cutting a new release! It'd have to be fairly inexpensive (~$200) to be profitable I think. Competitors: XM Radio.
2. I want to hook my MP3 collection up to my home stereo. I believe this is already possible, but I want more. I want to be able to sit on my patio and control my home stereo with my iPod. iPod = remote control. Of course, we don't have a home stereo, nor a patio - but I do plan to purchase these luxuries someday, and I'd love to switch from Bare Naked Ladies to Jimmy Buffett when Julie goes to change a diaper. ;-D