If you were looking for an inexpensive vacuum robot that can get into every corner and go under even the lowest furniture, the Agait E-Clean Mini is definitely a good choice.
Its small size and swiftness are not the only positive aspects of this little robot, its price point being below 150$ is very appealing when compared to the ~600$ vacuum robots. You can see the little bot in action below. http://www.youtube.com/watch?v=Ul-EZccylxQ
Want to dispute the world smallest vacuum robot title? Leave a message below if you find a smaller one.