I'm pretty happy with my kit. I've adjusted it over time and haven't made any significant changes lately.
I do want to add some stuff when I get around to it:
Good boots. While not specifically part of a walking kit, having good footwear nearby would be a good idea.
Patagonia silkweight top. When you are out walking, you get hot. The Patagonia silk weight stuff is light, thin and drives VERY quick.
Energy bars. I've actually had some as part of the kit previously, but they get crushed pretty easily. Anyone have any thoughts on this?
Some sort of cleaning wipes. I had some wipes in my bag before, but 1) they tend to dry out due to abuse and 2) too heavy. Thoughts?
Whistle. I have one on my keys, but I'd like one in the kit.
Extra cell phone battery.
This thread has made me want to add a few things: Needle, thread, BleedX, knot card and chalk.
The areas I am least satisfied are the tools. I didn't want a multitool since I only want a few things and I want something better than a multitool. However, the weight penalty is annoying. What I would like would be a set of titanium pliers and screwdrivers. Again, if anyone has any ideas it would be great.
-john