I designed a camera holder for the moving bed of Prusa i3 mk2, so that you can use GoPro, Xiaomi Yi and other cameras to create smooth timelapses.
Thingiverse link:
http://www.thingiverse.com/thing:1704137
(There are many more links in video description for other camera types)
https://www.youtube.com/watch?v=sAveTiDVwKs