Silver Plated Fluted Business Card Holder This is the big battery I use that gets me and my gadgets through the longest of days.
Anker PowerCore+ mini (3350mAh Premium Aluminum Portable Charger) Lipstick-Sized External Battery Power Bank for iPhone 6 / 6 Plus, iPad Air 2 / mini 3, Galaxy S6 / S6 Edge and More (Black) This is the mini-battery I mentioned, good for one full charge of your smartphone.
Bobble BPA-Free 550 ml Water Bottle, Magenta I love my water bobble! Really useful little thing.