Editor's Note: We're getting into the holiday spirit here at Crisp Green, which means helping you find the crispest, greenest, most innovative gifts for all the tech and design geeks on your list! This week we're featuring 'Last Minute Gifts'. See all of our gift ideas here. Happy Holidays!

I don't know about you, but I use the built-in speaker on my smartphone every day. My work and hobbies often bring me places where I want to listen to music and do not want my movement to be restricted by headphones, nor do I want to lug around an additional device that also needs batteries to project the tunes loud enough so I can hear them.

Using the same hollow-body-guitar-principle applied to the original koostik sound dock, the Koostik "mini koo" channels sound down through the bottom of the device and bounces it through the "trumpet horn" to project sound out in all directions.

OK, here's the big caveat (don't be mad): our sources tell us Koostik has exceeded its capacity and they are no longer able to ship this product in time for the holidays. But who says we can only give awesome green gifts once a year? Stash this one in your back pocket for the next birthday on your list.