I drink a lot of water and was trying to figure out a way to be able to drink while riding with a helmet.
I took a 3/8 hose and mouthpiece from a backpack water bottle and inserted it into the bottle.
It has a shut off so debris does not get in.

NOW I have a challenge to Bob, Finless. You seem to be very handy with electronics.
I want to make a chiller for the water.
I'm thinking, (I know that's a problem) that in aviation we take measurements, cool water, or heat water with bi-metal strips.
I'm thinking that maybe that is something we could do.
What do you think? Are you up to the challenge?
Stefan