travel and rhum

I've gotten into camping/hiking lately. And I'm curious what you guys would recommend to be the best water solution. I've gotten tired of carrying water bottles on my hikes so I've mostly got my eye on those hydration bladders. Right now I'm looking at the camelback packs they have but they seem to be marketed for bikers not sure if there's a better option for a hiker. All I really take with me on my hikes are water, phone, keys, knife, pepper spray, and maybe a powerbar or beef jerky. I'd like to take about 3L of water if that helps. Thanks

I'm not fully sure if this is allowed here, but it's the best idea I had. I apologize if not and please feel free to delete me. I have a coworker who has been going through an awful time lately and I want to get her something thoughtful for Christmas. I know she loves hiking, she does it as often as she can, so I want to get her something that she could make use of with it since it's her favorite hobby. I have awful allergies so I barely go outside and know nothing helpful. Do you guys have any suggestions? She already has a million waterbottles so probably not that. Any ideas are really appreciated!