Well.. another DIY from me!
So, I’ve came across these Cola bottle belt clip on the web (first time saw this was actually on the subway)
Been using these to clip a bottle on the camera bag for long time.
suddenly got this idea.
So, basically i took 3 of these clip, took the hook out and thread it with a cable velcro tie.
and of course, you can mount three 2 liters one. (click here for full size)