A portable platform for removable attachment to a vertically oriented base support includes a back portion and a base pivotably attached thereto. The back portion includes a coupling member configured for connection to a mounting member attachable to a vertically oriented base support. The base includes a brace extending therefrom. The base and back portion are movable between a folded configuration and an unfolded configuration such that the brace pressibly engages the vertically oriented base support when in the unfolded configuration.
