new item(straw of breathing)

But then it wouldn't be a straw. That's what makes it fun!

A straw probably isn't the best way to do it, but it's a cool idea. I like it (though i don't think i'll ever use it)

Any other way's you would make this work then?

A mask?
Maybe a helmet?

Maybe a large tank on the back?

Too modern. Go with the straw or a helmet.