Fjällräven, Water bag
The beginning of the 90's.
All my hikes.
A very smart thing. Looks like a bag with a handle on top. You just put it in the water and drag and then you got several liters of water. You spare your legs when you don't have to run away to get some water, instead you can rest.
Like I said if like walking over the river to get water this is not a thing for you.