A long-term outdoor storage container is provided to store items at a wildlife or game observation or hunting location, optionally adjacent a treestand or other elevated platform. The storage container can include a closure panel hingedly secured to a housing having integral legs that stabilize and/or space the container relative to a tree or other support, latches to securely close the panel relative to the housing, optionally in a waterproof sealed manner, an insert in an internal compartment of the container to stow items therein, and retention strap flanges to retain a retention strap that secures the container to a tree. The container can include flanges or loops to accommodate a lock and cable, thereby securing the container against theft. The container can include a display to display time, temperature, barometric pressure and other information.