One thing I dont like to carry in the woods or on hikes is a water bottle or multiple bottles...I like to pack light.  Usually just a shortbow and a few arrows in hand...my machete if I find a nice sapling to cut down...thats about it.
For Christmas my brother sent me a Camelbak hydration pack.  When I first opened the package I had no idea what the hell this tiny backpack looking thing was.  I called him asking WTF is this thing? haha.  He told me I was a dumbass and that it was my Christmas present and it was used for holding water/liquids.  I was ecstatic...thanked him and told him I'd see him christmas eve to pick him up at the airport.
I love using this thing...it is super handy.  No more heavy water bottle in my pocket or in my hand.  I just pop in some ice cubes and fill it up with water and go.  I can even wear it under my pea coat and none of my friends even know I'm wearing it until I pull out the tube and take a drink lol.
Anyone else here have or use one?  I'd highly recommend it.  I'm kinda of a weirder person than most my friends but I'll wear this this while hanging out sometimes...lol...I love it.  I dont have to get up to get a drink lol.
camelbak.com/sports-recreation/spring-summer-hydration-packs/2010-classic.aspx
