Re: So....What's in your Spy Capsule? I wasn't sure if I should post this in "Other EDC" or "Keychain" because the subject is about something that I EDC on my keychain, but it is not exactly a "tool" either. I am writing about those tiny machined, anodized, airtight o-ringed aluminum capsules that are sold at outdoor stores, surplus stores, and sometimes drugstores. They range in size from about 1" to a whopping 3" size. The ones that I'm specifically talking about are shaped like cylindrical capsules (rounded ends), but there are variants that are spherical also. Anyway, they are marketed as "pill containers", and I can imagine all sorts of nefarious drug related used for such a container. I actually bought a few initially only knowing that they were interesting containers, and only later did I find a great purpose for them. I put one on my keychain, and another as a side pocket zipper pull on my favourite fleece vest. And what do I store in them?? Cash. After experimenting a bit, I found that a $20 bill, folded in half length-wise, and then rolled up, fit perfectly in the small sized capsule. I chose the $20 because I found that $100 bills and $50 bills were not as readily useable (like some people didn't have enough change). What it is, is a stash of "emergency" cash, separate from my wallet. And I was surprised how many times it's come in handy. Sometimes when I'm a few bucks short for a restaurant bill, or I'm out working out in athletic togs and decide I want to buy a drink, or I find myself stranded at an airport and just need cabfare to get to my hotel (and don't want to go searching for an ATM). Whatever the situation, it just gives me a bit of reassurance to know that I have a little back-up cash with me all the time, right on my keyset. It occurs to me also that TSA has NEVER checked inside this little capsule in all the flying that I do. Hmmm. Disturbing, because I can think of pleny of things that I could have brought on a plane in such a container.