I find out a US army collapsible canteen
at my deposit.
I think it has potentialities for
bushcraft mode camping. :)
The hot, wet, jungle conditions in the Vietnam War
generated requirements for new equipment.
One example was the five quart canteen
that was produced starting in 1968.
It served as a large capacity canteen
or could be inflated with air for use as a flotation device.
Its five quart(=4.73 liter) capacity is most
suitable for my one night's lodging.
But, I want to add a tap(faucet) to it.
So I make a tap.
Camelbak's hydrolock part
and urethane pipe.
The tap thrusts in the nozzle
The bottle hangs up upside down,
it is convenient to pour water.
I have read 'Guns, Germs, and Steel(1998)'
written by Jared Diamond.
In the process of making tools,
I experience the human progress personally.