Check out SciFi Cube Object No 68243 Low Poly Shape Low-poly 3D model on CGTrader for $7. High-quality mesh by 3dmodelbase.
STL (Stereolithography, filesize: 1.42 MB), OBJ (OBJ, filesize: 2.89 MB), 3DS (3D Studio, filesize: 755 KB), C4D (Cinema 4D, filesize: 1.37 MB), FBX (Autodesk FBX, filesize: 9.96 MB)