I've read somewhere that iodine solution makes for a good no-rinse sanitizer. Can anyone give me any more info on this, or if there's some iodine-based product out there?
I never met a homebrew I didn't like.
It is usually sold as iodophor. A 12.5 ppm solution makes an excellent no rinse sanitizer. If you search for "iodophor," it has been discussed a lot here. Or you can read about it here: http://www.howtobrew.com/section1/chapter2-2-3.html
It's sold at my LHBS as B.E.S.T., but it's essentially iodophor. I use it exclusively, it's cheap and effective.