webcam on lamp arm : zip-tie only

I loved the above idea to use an lamp's arm as a jig for a webcam, and sometimes you have the opportunity to say : "there I fixed it" with almost nothing (zip-tie powa).

Movements of the arm : http://www.youtube.com/watch?v=JXz8dL9bXeM
Pov of the cam : http://www.youtube.com/watch?v=rlbslsalrA4

Approved for the C910 ^^
(but if you have one, I have a better solution now : http://www.thingiverse.com/thing:27470 )