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.
I chose this image because it showed a character with a similar colour scheme and cuteness appeal as the technician, but the character is more humanoid than the technician will be.
Just Robots by Onorio and Scott: The Most Adorable 3D Printed Robots Ever! -
concept robots via PinCG.com
Pronto R1, il robot che entrerà nelle case - Tecnologie - Scienza&Tecnica - ANSA.it
Robot library https://www.facebook.com/CharacterDesignReferences
Maybe something small, for my first one
Picked up by CGchips. 2D,3DCG tutorials and 3Dprinter news site. http://www.cgchips.com