Here are a couple of examples I've recently come across.
My M&M's. Now people can order personalized M&Ms online, you can put a name or message on the tasty little candies. I like this idea a lot, but I'm curious to see how successful it is seeing as how price is still a barrier for most people even in this improving economy. And with a required minimum order of 4 7-ounce bags at $11.50 each this personalization don't come cheap.
Get Your M&Ms
Classic Titles That Are Definitively Yours. Penguin Publishing is releasing certain classic novels with blank covers and letting the buyers design their own cover art. This is currently only available through the British arm of Penguin Publishing, and seeing as how the Brits (and Europeans in general) are usually well ahead of us Yanks when it comes to adapting marketing techniques we should probably keep an eye out for it here in the near future. The idea behind this is that the reader gets the classic book they love but with a cover that's uniquely theirs, making it a personalizable classic that will have more intrinsic value to the buyer. I like this idea and I think this could be a good way of attracting younger audiences to reading. Hopefully this is successful.
Penguin