Cleaning robot thumbnails

These thumbnails are for the cleaning robot I had in the concept art, I thought the original looked slightly bland so I tried to find an alternative. The first three are mostly unchanged from the original in terms of shape but with some extra editions. 28 to 30 are for potentially a docking station for them to charge. For 31 to 34 I suddenly remembered that  Henry hoovers exist with faces on them so I started making some with faces for added personality. 35 to 37 are based of the film the pixar film wall-e.