I designed some accessories for GoPro Hero 3 camera which you can 3D print.
You can download them here: <a href="http://www.thingiverse.com/Xirux/designs" target="_blank">http://www.thingiverse.com/Xirux/designs</a>
<a href="https://www.youtube.com/watch?v=xfuysvIBtoE" target="_blank">https://www.youtube.com/watch?v=xfuysvIBtoE</a>
Visit my blog: <a href="http://www.mordzon.net/blog/" target="_blank">http://www.mordzon.net/blog/</a>