Check out SciFi Cube Object No 52821 Low Poly Shape Low-poly 3D model on CGTrader for $7. High-quality mesh by 3dmodelbase.
STL (Stereolithography, filesize: 813 KB), OBJ (OBJ, filesize: 1.57 MB), 3DS (3D Studio, filesize: 411 KB), C4D (Cinema 4D, filesize: 938 KB), FBX (Autodesk FBX, filesize: 9.61 MB)