I love leather pouches. I organize my handbag and school bag with pouches like this one (medications in one, pens in one, etc.). This Deux Luxe pouch is nice. I also love this gorgeous eggplant bag from Yoox. And these metallic West Elm pouches are my favorite.
Prefer something not made of leather? J.Crew has a cool metallic canvas bag. But these personalizable pouches from Mark & Graham may be the best ones I found. I love the neutral black and tan colorblock.