cartoon box 3D model is available on CGTrader for $15. Original author: SuryaAlexander. Specs: 15000 polys, 15000 verts.
STL (Stereolithography, filesize: 4.18 KB), OBJ (OBJ, filesize: 4.93 KB), BLEND (Blender, filesize: 794 KB), OTHER (Other, filesize: 794 KB), FBX (Autodesk FBX, filesize: 26.9 KB)