I added my new Squirt P4 and a "key chain" sized first aid kit put out by Adventure Medical Kits (available at REI among other places). This first aid kit comes with some items I like to have along on short hikes (bandaids, moleskin, asprin & ibuprofen, antiseptic wipes, insect bite relief wipes and antihistimine tablets - good in case one has an unexpected reaction to a bee sting, and tweezers).<br><br>It really isn't a key chain anymore so I put it all on a mini carabiner and carry it in a coat pocket. Now if I could just find where I put my keys....