This is a 3D model as refined concept to test different shapes and color schemes. I've used my own greebles along with the awesome greeble kit from Andrew Averkin. I've used them as basis and remodeled them as subdivision mesh.
Hover drone - Front view
Hover drone - Rear view
Hover drone - Side view
Hover drone - Front clay
Hover drone - Rear clay
Hover drone - Side clay