Starting with left over coffee containers, empty juice bottles, and some mini pads I bought for cheap at Goodwill. Put it all together with hot glue and cheap wood screws. Added a few details from plastic lids and caps. Did a first coat of black spray paint, then a coat of metallic silver. Letting it dry for 24 hours between coats helps keep it from chipping. A final coat of black for the chest plate and shoulders. And a final coat of off white for the body.
After I’m done in post we’ll have an army of flying robots.
This only cost about $7.