I can see a very cute animation here. Each robot doing what it can to make sure its plant survives. Too many ideas to share here.
The Roboming Fellow amounts to what happens when you take a Roomba robotic vacuum and reapply some of the same technologies for home security and pet assistance duties.
Wall E and Eve Transformation
50 Stunning and Futuristic Robot Character design inspiration
Probot - by suburbbum @ deviantart
Mechanical arm showing potential styling idea