Plastic bottles often get a bad rap for environmental reasons, but I would like to think that bike hacks incorporating plastic bottles are making a small dent in keeping plastic out of land fills. It seems that not a week passes by where I do not see an old plastic bottle re-purposed on a bike, and some are quite elegant.
The following text and picture come from the blog Cycling Experiences.
* * * * * * * * * * * * * * * *
Today, as it rains in North Carolina, and I look for a bag or other low-cost rain protection it dawns upon me that a drink/pop/soda bottle will likely give as much protection as a bag, although it is not sealed. I cut the bottle to work on my Trek Project One, my RANS Citi Crank Forward, and my Catrike 700. Water from the open end could be problematic. If so, this is when I put the phone in a waterproof bag and into my pocket. I have a taller bottle that I’ll use for added protection. This is essentially a no-cost solution.
Photo from jalexartis' photostream

Elegant..simple...and no doubt effective.
Good job!
Posted by: Runwithken | 11/15/2011 at 01:07 PM
Genius. I too have my phone in just such a holder. I hate the bags and covers that are out there. This is so simple. Can't wait to try it out.
Posted by: Wo King | 11/18/2011 at 07:32 AM
As simple as that. You may even promote your idea, why not :)
Posted by: Dwein Einz | 12/02/2011 at 04:12 AM
As for water resistance, what about cutting the top of the bottle off and reattaching it with tape or such? Aside from it being tacky looking....
Posted by: Leo Horishny | 12/30/2011 at 07:30 PM