Disclosed herein is an apparatus attachable to a barricading structure and method for providing an activity surface. The barricading structure may be, for example, a railing. The apparatus comprises a mountable backsplash attached to the barricading structure, a foldable support platform attached to the mountable backsplash via multiple connectors, and a locking system for locking the mountable backsplash to the barricading structure. The foldable support platform comprises a first inlay fitted into a support structure for providing an activity surface to hold objects. The connectors are accommodated in slots provided on the mountable backsplash. The accommodated connectors are hinged to the mountable backsplash using a hinge pin to facilitate pivotal connection of the foldable support platform to the mountable backsplash. The apparatus may comprise leg supports for supporting weight of the foldable support platform. The apparatus is made of a weather resistant material and a heat resistant material.