Here's a very unique capo, and it's a monster. What this one does is it allows you to select which strings in a range of 4 frets to have capo-ed. A very unique idea and here's a video review of it in action:

Well that's it. We've covered about 15 capos all designed to extend the capabilities of the guitar one way or another.

There are other capos out there and one word of warning. I highly recommend staying away from any cheap capo that attaches by a strap or bungee. These capos usually don't hold all the strings well, cause buzzing while playing, or don't last long at all. They cost much less than some of the one's I've covered today, but these truly are a product where you get what you pay for.

With so many capos it can be hard to choose what you need. You do need at least one regular capo that can cover 6 strings. I would probably get a Glider Capo for that job. Then if I wanted to experiment with altered tunings I'd probably opt for a Spider Capo. But the point is no one capo fits everyones needs the same so have fun!

These are just some of the new and inventive capos that have come out in the last decade or so. Give them a shot and see how they can expand your sound!