I sewed up some of my mesh bags in my BOB bag, and while walking my dog I picked up a rubber stopper (like from a table/chair leg) which I turned into an emergency fishing kit that fits into my pocket. I wrapped a spool of fishing line around it, and the rubber allows me to cut an effective slit for holding the end of the line (harder materials like plastic won't grip onto a line easily), as well as being the perfect grippy material to easily spool slippery line with no frustration. Inside the stopper I stuffed 4 bait hooks, which are safe from puncturing in my pocket due to the rubber housing, loaded with leader lines and swivel clips, and a length of rolled up jute twine for dry tinder (I carry a ferro rod with me, so this will save me from having to forage dry tinder naturally in an emergency situation). Jute twine is awesome for a pocket survival kit because it's all twisted up into a rope and while it takes more effort to unravel it for use as tinder it can carry a heck of a lot of tinder in a small length of twine. Plus, until you've used it up as tinder you can still use it as cordage. Then I wrapped the whole thing in a breathable canvas pouch (reusable spice/tea bag), which I use for putting live bait in (worms, grasshoppers, etc.).
Okay... this is actually what I did yesterday, not today..
When I lived on the road I always had a little fishing kit like this as well as a sewing kit with me, but I stopped carrying that sort of stuff since I don't get dirt time anymore. This little fishing kit is so perfect though. It's my favorite yet.