Check out SciFi Cube Object No 54826 Low Poly Shape Low-poly 3D model on CGTrader for $7. High-quality mesh by 3dmodelbase.
STL (Stereolithography, filesize: 838 KB), OBJ (OBJ, filesize: 1.62 MB), 3DS (3D Studio, filesize: 426 KB), C4D (Cinema 4D, filesize: 956 KB), FBX (Autodesk FBX, filesize: 9.62 MB)