It’s not often that a product forays into uncharted territory- yet that’s what this does for the urban setting. Claim that post for your own, I say.
“The aim of the urban cup holder is to encourage people to reinterpret street settings and claim them as their territory, instead of just using them as a means of passage from A to B. The cup holder is easily clamped with one hand to posts in the street, then used as a coat/bag/umbrella hanger and a drink holder. In turn, giving the user a feeling of control and creating a more personal space, a temporary territory.”