I want to use containers that match the size of my trouser pockets, but that are as thin as possible.

The problem I encounter is that the dividers and internal pockets in wallets always add more bulk than utility.

So I use a more home-made approach.

In my right pocket is an OmniSeal bifold wallet. This has two credit cards, my drivers license and insurance papers, and my CCW permit:

http://www.rei.com/product/492598?vcat=REI_SEARCH

In the same pocket I have my oversized bandanna, folded to about 4-1/2 x 7 x 1/2 inches (12 x 18 x 1.3 cm), and a keyring of survival tools.

In my left pocket I have my tinder and first aid in a plastic bag. It used to be a Zip-Lock quart-sized bag, but is now a 12 x 9 inch (32 x 23 cm) heavy-duty plastic bag folded into thirds. It ends up being 4-1/2 x 9 x 3/4 inches (12 x 23 x 1.8 cm).

I get them here:

http://www.mcmaster.com/

I think the part number is: 19215T84. I also have about ten feet of paracord.

It's easy and inexpensive to replace the bag every month or so. It provides some degree of waterproofing. It opens into a big container so I can freely rummage around in an emergency to get at what I want.

I use smaller plastic bags to isolate liquids (antibiotic cream, alcohol wipes, etc.).

Bear