this post brings up a good point. Those little bottles are hard to find. I called the company that Doug describes and the bottles are cheap, but shipping is about twice the cost of the bottles. I have been on the search for a container that fits in an altoid tin and I found one at the Container Store (go figure). It is a small translucent box, about 3/4 of an inch square (maybe smaller) and it fits into an altoids tin just right. Its not water proof, but you can tape the lid closed and that should solve the problem. It cost 39 cents, so I bought a few for the kits I am building for some family members.

Plus they come in all kinds of colors, so you can pick which ever is you favorite.

Garrett
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On occasion of every accident that befalls you, remember to turn to yourself and inquire what power you have for turning it to use. - Epictetus