The main problem would be the wear to the matchhead due to the rattling. This can be prevented with a cotton ball.
Iīve tried to ignite the matches in a container by severe impact. The experiment was totally unsuccessfull. Carrying the matches in a container should be save enough.
Loading one up one down will not do much for the safety but it will increase the capacity of the container.
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If it isnīt broken, it doesnīt have enough features yet.