Tricycle toy (Polygon mesh 3D model) is available on CGTrader for $25. Original author: stage3d. Specs: 59206 polys, 62141 verts.
STL (Stereolithography, filesize: 5.65 MB), OBJ (OBJ, filesize: 8.33 MB), FBX (Autodesk FBX, filesize: 2.73 MB), BLEND (Blender, filesize: 8.67 MB)