Great suggestions, thanks!

Still need to find some O-rings for the Bic, thanks for reminding me! I've used that zip-tie approach before, but as this kit might get opened up more often, I would like to have something that can be replaced after use.

Usually I've got a water bottle with me wherever I go, but I might see about adding a small Platypus or Vapur collapsible bottle to the larger backpack, or else one of those small zippered water storage bags.

The picks are for educational purposes. Plus, not too worried about a stop 'n' frisk where I am.