Quick Detach Camera Mount (aka quiver mount)
I recommend this one & have one on every home brew trail cam I build.
I know you aren't using a home brew so you would need to use some type of adhesive to attach it to the back of your trail cam.
Try "Household Welder" from walmart I used it once and it held up great.
The QDM is inexpensive light weight and can be mounted to about any size tree or branch.
Below is a fast and reliable seller that i have bought from numerous times.
http://huntnbuddyproducts.com/Produc...-products.html