Check out SciFi Cube Object No 57721 Low Poly Shape Low-poly 3D model on CGTrader for $7. High-quality mesh by 3dmodelbase.
STL (Stereolithography, filesize: 1.14 MB), OBJ (OBJ, filesize: 2.26 MB), 3DS (3D Studio, filesize: 585 KB), C4D (Cinema 4D, filesize: 1.17 MB), FBX (Autodesk FBX, filesize: 9.79 MB)