If you still haven't found a vertical planter idea that is exactly your style, maybe this one will do it for you. The pots are simply held in position by a single piece of rebar put through the drain holes of the pots. Perfect for small herbs!
All you need is a small amount of vertical space around a balcony or an open window which can hang or store a vertical array of drink bottles that can grow all your herbs and lettuce easily. Recycle as many of your plastic drink containers.