Check out SciFi Shape Object Low Poly 17 Low-poly 3D model on CGTrader for $7. High-quality mesh by 3dmodelbase.
STL (Stereolithography, filesize: 1.46 MB), OBJ (OBJ, filesize: 3.1 MB), C4D (Cinema 4D, filesize: 1.4 MB), 3DS (3D Studio, filesize: 787 KB), FBX (Autodesk FBX, filesize: 9.99 MB)