Plack Picnic Tray, 1977–80 Dark green molded plastic unit comprising joined elements of an individual ‘place setting’: cup with tab handle (inverted), spoon, fork, knife and D-shaped plate; elements can be separated at joins. Disposable Related Objects Plack Picnic Tray, 1977 Plack Picnic Tray, 1977–80 Plack Picnic Tray, 1979