Very simple box made in blender with a material in a light brown color and rigged to have flaps move.
STL (Stereolithography, filesize: 3.3 KB), OBJ (OBJ, filesize: 3.22 KB), 3DS (3D Studio, filesize: 1.46 KB), ABC (Alembic, filesize: 6.47 KB), OTHER (Other, filesize: 6.28 KB), DAE (Collada, filesize: 18.5 KB), FBX (Autodesk FBX, filesize: 42.3 KB), BLEND (Blender, filesize: 490 KB)