I recently needed a bunch of gear for a small SERE kit I am putting together and for my entry kit. A good friend recommended that I check Vigilant Gear.
They specialize in Urban and Outdoors survival equipment and have a variety of tools that great for what I am trying to build. They also carry medical kits, cordage, knives, lock picks and many more things.
And, I didn't know this, they are fans of the blog.
The Go-Tubes and the TIHK are great for both the mini SERE kit and the entry gear I am putting together. The TIHK is really small and can be hidden anywhere. See below some pictures for refence.
Go check Vigilant Gear if you need lock pics, urban survival gear and pretty much any survival items you might need.