Elevation gimbal made for the T4 mini. Sure it will work on lots of other platforms too. I put more holes than required for the mini T4 just to have options for other quads later. Makes flying much easier than when I was constantly looking at the ground or the sky.

https://youtu.be/9RS_8K2dbnI
Camera box remixed from

http://www.thingiverse.com/thing:840385

Servo arm is remix of one I found in thingiverse, that I can't seem to find.

Build parts with .2mm layers 40% infill PLA.
Servo arm (due to splines) was built .05mm layer 50% normal speed and100% fill.
I am using currently a CC3D controller. I have set the angle range to +-22.5deg.
The camera AND tx is very cheap ($26) and very good from Bangood.
http://us.banggood.com/Wholesale-Warehouse-Eachine-700TVL-13-Cmos-FPV-110-Degree-Camera-w32CH-Transmission-wp-Usa-965760.html

Servo is from Amazon
http://www.amazon.com/gp/product/B00CCZ2CRA?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s00
UPDATE 8/6/15
WARNING DO NOT GET THESE SERVOS! They are junk. Buy a good one. I had a motor our condition at 100' of alt. the other day. When did an accident investigation afterward I found the this servo shorted internally witch caused the flight board output to the ESC's to drop out. Quads do not glide. Fortunately no bought parts were destroyed outside of 1 prop. All but 2 printed parts were all a complete loss.

Control link I had a .047" music wire laying around. You can use up to 1.25mm-1.5mm should work good too.