The little button that could.
I normally wouldn't write about something that isn't out yet but there's an incredible hype going with this product (and with good reason). Along with the actual button you can get a keychain holder to hide it away if you want to use our headphones. This little bit of niftyness adds a much needed extra button that can be used for so many different things and also multiple things (depending on how long or how many times it's clicked).
So I know I'm getting one but now it comes down to which one. I'm looking at either the white or blue myself since I personally like blue but have a white phone so that's my next decision but either way I will be definitely backing this project that's way beyond needing it anymore. Although the more funding they receive the more features they are looking to be able to implement. So head over now and take a look. You'll be glad you did because I know I will be. Just can't wait to get that little guy in the mail and now to start thinking of all the things I want to make it do especially since I am a Tasker user but that's a whole other story.