Recently I saw an ad on Facebook for an item called the PACElid. A  PACElid is a cap that also functions as a storage container for your wide mouth Nalgene, Kleen Kanteen, and Camelbak water bottles.  It looked like an interesting concept so I ordered one. The PACElid is made from a high impact plastic, I found it to strong (I dropped it a time or two during my testing) and did not leak at any time during my use of it on my water bottle.
I usually take a Camelbak water bottle with me when I’m flying so that I can fill it up and not have to buy a bottle of overpriced water at the airport. I thought about what I would want to store in the container section of the cap and decided that since I like to put the bottle in the pocket of the seat in front of me so that I don’t have to dig through my bag that I’d put a few items I’d want within reach at all times. In the cap I put two packets of Tylenol, some stomach medicine, a couple cough drops, and my Ipod and ear buds.
I could have fit something else in there had I wanted but these were the items I decided on. It worked out great when I recently traveled to Croatia for a seminar and used the PACElid. It worked out great as soon as I boarded. I stowed my carry on bag took the water bottle with  PACElid on it and had the small items I wanted at hand. The PACElid is offered in a few different colors and different color replacement lids are available. They also have some prepacked as survival and medical kits.
The base model is $19.99 and can be ordered at https://pacelid.com/.
Author – Art Dorst served in the U.S. Navy and Navy Reserves and eventually retired as an NCO from The Army National Guard. He is also a retired municipal Police Officer, a Certified EMT, NRA Instructor, and is currently a security provider/trainer.