Abstract: A portable appliance adapted for temporary attachment to a columnar member, such as a tree, pole, or the like, includes a frame which is attached to the columnar member by a tensile member such that the frame is pivotable between an unlocked position, in which the frame is loosely attached to the columnar member, and a locked position, in which the frame is securely attached to the columnar member. Because the distance between the attaching means and the columnar member increases as the frame pivots from its unlocked position to its locked position, the tensile member is tensioned in response to such pivotal movement of the frame. In order to inhibit the inadvertent detachment of the appliance from the columnar member when the frame is in its locked position, the attaching means is located between an upper end and a lower end of the frame and adjacent to an outer edge thereof. To facilitate transportation and storage, the frame can be collapsible and/or nestable.